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Kristin Cavallari's family says her brother Michael suffered from extreme paranoia leading up to his fatal disappearance in Utah ... fearing a Mexican gang member was after him.

According to the Grand Co. Sheriff's report -- obtained by TMZ -- Michael Cavallari's mother Judy told cops he was diagnosed as bipolar and had recently claimed a gang member was out to get him.

Michael's car was found a few days after he went missing ... with 2 cell phones, a laptop and a golf bag containing $18k in cash inside. One possible explanation for all that loot -- the report says he'd just inherited $24k from a grandmother.

Kris Jenner is portrayed in 'The People v O.J. Simpson' as someone who fiercely believes O.J. murdered Nicole Brown Simpson and is angry that ex-husband Robert Kardashian is defending him ... and we know the sentiment is real.

The promo for next week's show has a scene where Kris angrily confronts Robert. Our sources -- definitely in a position to know -- say Kris did indeed have angry exchanges with her ex and believed strongly from the minute she found out Nicole was murdered that O.J. did it.

Kris was very close to Nicole and knew O.J. well. She and a group of friends who were close to Nicole all shared the same sentiment.

The "Family Feud" contestant Steve Harvey ripped for delivering the "worst answer ever" ... says she's positive she's NOT the worst -- although proving it might be difficult.

Sheila Patterson tells TMZ ... her phone's been ringing off the hook since Steve posted a clip of her multiple, hysterical attempts to answer, "What's another way people say mother?"

The clip of Sheila trying to pass off previous answers by changing inflection or adding a Spanish accent has gone viral. She admits she cracked under the pressure of being in front of a live audience.

But as a longtime fan of the show, she insists she's seen much worse responses. We asked her to give us an example ... Sheila drew a blank.

Must be her thing.

Several locks of John Lennon's hair are on the auction block, and even though it's already going for five figures ... it's a steal as Lennon memorabilia goes.

Heritage Auction out of Dallas is hawking a 4-inch chunk of John's hair -- a hairdresser cut it off before his role in a 1967 movie called, "How I Won The War" -- and the current bid is at $12k.

Past Lennon items have gone for way more than that: his '65 Rolls Royce Phantom V sold for $2.23 MILLION, and Lennon's handwritten lyrics to "All You Need is Love" fetched $1.25 million.

So chances are the price on Lennon's locks will go through the roof too. Get your bids in now!

Teresa Giudice is a shoo-in for season 7 of 'Real Housewives of New Jersey' but 3 other women are suddenly unemployed ... TMZ has learned.

Our production sources tell us Dina Manzo and the twins Teresa Aprea and Nicole Napolitano all got the ax.

No word yet on who will fill the vacancies ... we're told Bravo's currently shopping for other housewives.

As of now, Teresa's sister-in-law, Melissa Gorga, and former member cast member Jacqueline Laurita are the only others locked in ... but it's gonna be the Teresa show all the way.

The Denver Police Dept. says it's PROUD of Broncos Nation -- saying they only made 12 Super Bowl celebration arrests in Denver Sunday night ... with NO major injuries.

We spoke with Officer Tyrone Campbell who tells us overall "people behaved themselves amazingly" ... but said there were some people who "acted silly."

As for the arrests ... Officer Campbell says there were a few weapons arrests, some criminal mischief busts, a couple nailed for lighting small fires and a few other popped for cop car damage.

No riots, no widespread mayhem.

Dave Matthews Band rocked San Fran Thursday night at a killer pre-Super Bowl party.

DIRECTV & Pepsi sponsored the concert on Pier 70 to kickoff the 50th Super Bowl weekend.

The party was aptly titled "Super Thursday Night" and it will continue through Sunday featuring Pharrell Williams and the Red Hot Chili Peppers.

As if free booze wasn't kind enough, the party was catered by celeb hotspot steakhouse STK offering sweet corn pudding cups, candied bacon cones, and Captain Crunch Cookies. Captain Crunch Cookies!

Jim Brown did it big for his 80th bday Thursday night -- with tons of HUGE STARS showing up to party ... and toasting the NFL legend with some of the most expensive booze at the bar!

It all went down at the St. Regis in San Fran -- where stars like Ray Lewis, Emmitt Smith, Ronnie Lott, Ludacris and Swizz Beatz and more partied at the event thrown by Haute Living.

But the highlight was the group toast ... where 100 people each raised a glass of Louis XIII cognac -- which goes for $350 per shot at the hotel.

There's more ... Brown was also presented with a painting from street artist MadSteez ... a painting that had been sold for $25,000.

In the end, we're told the event raised $100k for Brown's charity

Congrats!!

Solange Knowles is a couple huge diamonds short after a bead-throwing mishap in New Orleans Thursday night.

Knowles' wedding ring fell off her finger somewhere along St. Charles Avenue -- this according to a Facebook post from parade officials. Solange was riding a float in the Krewe of Muses parade when the ring went missing.

Law enforcement sources tell TMZ Solange has yet to file a report.

Krewe of Muses is offering an unspecified reward for the rock.

Solange and Alan Ferguson got married in November 2014.

Nothing brings a group of tough football players together like a bottle of California red ... just ask Jim Kelly -- who reunited with a bunch of his former Bills teammates in Napa Valley this week.

The QB hooked up with Bruce Smith, Thurman Thomas, Cornelius Bennett, Steve Tasker and Darryl Talley (and their wives) for a 25 year reunion from Super Bowl XXV.

TMZ Sports spoke with Thurman's wife Patti who told us, "These guys are obsessed with each other. It amazes me that after all these years they are still so close."

"They try to visit each other as much as possible. But this was definitely a special occasion with them all being together. This is a special group of guys. It was nice to be together for a few days before a couple of the guys have their commitments at the Super Bowl."

Mike Piazza's timepiece game just got stronger ... courtesy of a SWEET GIFT worth $25k from the CEO of a luxury watchmaker ... TMZ Sports has learned.

The gift giving went down in Miami at a party thrown by Swiss watchmaker Ulysse Nardin and luxury lifestyle magazine Haute Living ... and the soon-to-be Hall of Famer was in attendance.

Piazza -- who's a friend of U.N.'s CEO -- was given a Ulysse Nardin Midnight Express Special Edition watch -- 1 of only 100 in existence -- to celebrate his election into Cooperstown.

It's good to be one of the greatest baseball players of all time.

Kate del Castillo is now wanted for questioning by the Mexican government, and TMZ has learned the case involves tequila and alleged money laundering.

Kate -- who interviewed El Chapo while he was on the run -- is an investor in Tequila Honor, and our sources say the government wants to know if El Chapo secretly invested in the company and the money he put in was laundered.

The government wants to question Kate and if she returns to Mexico they could detain her for that purpose. Sources connected with Kate tell us, although she'd like to go back to Mexico to visit family, she will not return until the investigation is closed. She lives in L.A.

If you're a 'Sharknado' fan with access to a tow truck or flatbed ... that cool RV used to blow up the latest windstorm of flesh-eating great whites is up for grabs!

The Asylum, the production company responsible for the franchise, listed the battle worn ride from 'Sharknado 3' on Craigslist. Asylum's landlord gave them 24 hours to move it or lose it -- so, we're told it's going to the first person who can get it off their lot in Burbank, CA.

The reason it's so trashed has nothing to do with flying sharks, and everything to do with a transient who recently set fire to the thing. Hence, the steal of a price. Asylum thinks the engine's still salvageable though.

C'mon, Ian Ziering ... think of it as a cool DIY project!

Lil Wayne and George Washington co-star in a Super Bowl commercial this year -- but some people are taking issue, since it shows Wayne cooking for George ... who famously owned slaves.

The ad for Apartments.com features Jeff Goldblum and a gospel choir singing 'Jeffersons' theme "Moving On Up." Eventually you see George and Weezy (get the reference?) all chummy next to a rooftop barbecue grill.

The criticism? The ad is low-key racist due to Washington's history as a slaver, but Wayne's camp doesn't see it that way ... at all. A source very close to him says the commercial is "meant to be funny and silly and not the least bit offensive."

The source added it's supposed to be comedy, and "people need to calm down."

We've also reached out to Apartments.com, but no word back yet. Either way, their ad's getting way more attention now.

The owner of the Oakland Raiders tells TMZ Sports ... he does in fact own the domain LasVegasRaiders.com -- and has for years -- "just in case" the Silver and Black move to Sin City.

We spoke with Mark Davis who confirmed he personally bought the domain back in the '90s "in case the team ever wound up in Vegas."

"I think it's only $8 per year ... so, it's worth it in case we end up there."

When asked why he liked Vegas as a possible destination, Davis said -- "It's close to where we are now. It would be a close trip for our fans and there are a lot of sports fans who visit Vegas."

One other interesting thing ... Davis told us he believes the Raiders are the only NFL team that could "exist" out in Vegas.

So far, it seems Vegas could still be in the cards for the team -- especially with Las Vegas Sands honcho Sheldon Adelson gunning to build a $1 billion stadium on the UNLV campus.

Kanye West now has peace on all fronts after hashing things out with Wiz Khalifa.

Kanye says he and Wiz chatted on Monday and it was a "Great convo." He didn't reveal much more about their discussion ... other than to say it was "All positive."

We've learned the peace summit was two-pronged. Our sources tell us Wiz and 'Ye's convo went down Monday morning -- and a few hours later Kim Kardashian and Amber Rose spoke to each other ... then decided to have their meeting at Kris Jenner's house.

Ever since their feud exploded on Twitter last week, Wiz has been blasting Yeezy almost every night during his South American tour -- but in an interview with Bootleg Kev on Tampa's Wild 94.1 ... Wiz said it's all squashed.