Tonight Show

Call him a c*** show host ... TMZ has learned, Johnny Carson recorded a sex tape with his wife back in the 1970s -- and not only has the tape just hit the market ... very solid sources tell TMZ, Johnny's johnny is ENORMOUS.

Multiple sources tell us, the tape owner approached the Carson estate in September to make a deal for the footage -- the estate said take a hike, and threatened to sue the owner if he ever sold it.

But the owner's apparently gone rogue -- we're told he's now shopping it to private collectors ... and it is legendary.

According to sources who've seen it, the tape appears to be one of his wives -- it's unclear which one. The tape opens with a naked dark-haired Carson masturbating by a pool -- then shows the woman (with a bouffant hairdo) going all Linda Lovelace.

It goes on for about 5 minutes -- then we're told it cuts to a 20-minute sex scene in Johnny's bedroom ... and Johnny does NOT hold back.

Oh yeah, we're also told he's hung like a horse -- seriously, porn star status. One source said it was at least 10 inches. But for legal reasons it can't go to a porn company, so the only way to unload it is with a private collector.

Lindsay Lohan wasn't spewing BS on "Jimmy Fallon" Thursday night -- talking about a "Mean Girls" reunion -- TMZ has learned, it's been in the works for weeks.

FYI, 2014 is the 10th anniversary of the film's release -- and sources tell us, co-writer Tina Fey has been leading the charge for a reunion to commemorate the occasion ... wrangling the entire cast over the last month.

And Lindsay was apparently the last to know about it -- she went on "Fallon" Thursday talking about how she had just run into Tina who mentioned the reunion idea to her ... and Lindsay was into it.

It's unclear how the reunion will come together -- Jimmy suggested hosting it on his show -- but we're told it could also materialize as a comedy sketch ... maybe on an awards show.

Sources close to Tina tell us, several prominent cast members are already on board -- Amy Poehler (Mrs. George), Jonathan Bennett (dreamy Aaron), Rajiv Surendra (Math Enthusiast / Bad-Ass MC), and Daniel Franzese (Too Gay to Function).

Pretty awesome. Now get in losers. We're going shopping.

Jimmy Fallon's crushing his competition -- partially because NBC's making one helluva deal for celebs to come on his show, and stay off all the other networks.

It's the kind of hard bargaining ... expert negotiators can appreciate.

NBC is coming down like a hammer on celebs who want to get on Jimmy Fallon's show ... if they dare do a show on CBS or ABC ... they can forget about "The Tonight Show."

Sources connected to CBS, NBC and ABC tell TMZ ... the Peacock network believes Jimmy Fallon's ratings success gives them extreme bargaining power. They put the word out to celebs, agents and publicists ... if they want to be on Fallon they can't appear on ANY other network ... and not just shows that go head-to-head with Jimmy, but morning shows as well.

We're told NBC is saying the stars who go on Fallon are also allowed to appear on "Today," "Dateline" and any similar shows they air, but that's it.

A GMA source tells TMZ ... they've already gotten fallout from people they were trying to book.

Fallon is dominating late night .... crushing Jimmy Kimmel by bringing in more than twice the number of viewers.

Don't expect Jay Leno to hijack "The Tonight Show" back from Jimmy Fallon ... because the ex late-night host swears he's done with TV ... FOREVER.

Jay was in West Palm Beach Florida -- but not to start his retirement. Leno was there to perform stand-up comedy just two days after his exit from "The Tonight Show."

Jay's answer may come as a surprise ... especially since he left the show in 2010 ... then famously wrangled it back from Conan O'Brien.

Joan Rivers thinks Jimmy Fallon is the perfect replacement for Jay Leno for one key reason -- he's actually funny!!!

Rivers unloaded a barrage of Leno insults on our photog yesterday in New York City, while heaping praise on Fallon ... who she says she's been trading emails with since news of the "Tonight Show" switch broke.

Rivers' beef with Leno and the "Tonight Show" has been going on for over 20 years ... which coincidentally is the amount of time Rivers says Leno has been on the air ... and done nothing memorable.

Jay Leno will be beached when his contract is up ... but not a day before -- this according to sources connected to NBC.

Jimmy Fallon will be replacing Jay on "The Tonight Show" when Jay's contract is up in September, 2014. There's been a buzz that NBC may not want to wait and will make the change before Jay's contract expires. Not gonna happen.

Informed sources connected with the network tell TMZ ... when Jay renegotiated his contract during the Conan O'Brien mess, he demanded and got several penalty clauses that would make NBC take an ENORMOUS financial hit if they pull the plug early.

We do not know specifically how much of a penalty NBC would have to pay, but we're told Jay made it so big, it would be too much for NBC to swallow.

"The Tonight Show with Jay Leno" is suffering some major setbacks -- 20 staffers were just canned from the show and even the big man himself had to take a pay cut ... this according to reports.

The firing of staff members was a decision made by Comcast -- the company that owns NBC -- while they try to assess the value of their investment, says The Hollywood Reporter.

In light of the firings, it was reported that even Leno himself took a huge pay cut from his reported $30 million salary to try and save as many jobs as possible. Leno has said for years he banks his salary from NBC and lives off the money he makes from his busy personal appearance schedule.

Lindsay got a standing ovation shortly before admitting no one but herself is to blame for the predicament that triggered a 120 day jail sentence.

Someone allegedly stole thousands of dollars of wardrobe at an office facility for the show. We're told the clothes were for the band. We're told band members were supposed to go to the facility -- in Hollywood -- for a fitting, but before they arrived someone noticed lots of stuff was missing.

A "Tonight Show" insider told us the threads were for the new band, fronted by Rickey Minor.

TMZ has learned ... one of the key players who made "American ldol" a success was so pissed last night after the show, he chewed out "A.I." producers backstage.

Rickey Minor -- who has been the bandleader for 6 seasons -- is leaving A.I. to head up Jay Leno's band on "The Tonight Show."

Minor was fit to be tied after no one thanked him or wished him well -- hell, they didn't even acknowledge him during last night's finale.

Our "A.I." spies tell us ... when the show was over Minor went off on producers, angrily telling them how insulted he was by their silent dis.

Minor refused to go backstage for the champagne afterparty. But producers pleaded with him and then got Randy Jackson to try and smooth it over with an unprepared speech.

Minor then said a few words but we're told, "You could cut the bitterness with a knife."

Simon Cowell wasn't the only one who bid sayonara to "American Idol" last night.

Dorian Holley -- the Vocal Coach and Associate Musical Director -- said farewell last night as well, and he's heading for "The Tonight Show."

Holley was also the Vocal Director for Michael Jackson and was a key player in the London tour that never happened. He was with Jackson hours before he died.

Holley will become the lead singer in "The Tonight Show" band. And he's not the only "A.I." musical guru who's jumping ship -- Rickey Minor will take over Jay's band.

During the gag, Leno created a fake Facebook page for Faisal Shahzad -- on which he claims the perp was a member of several online groups, including Al Qaeda, the Pakistan Frequent Flyers Club ... and Team Coco.

Though it appears NBC tried to edit around the Conan O'Brien support symbol, a few shots of the pin still managed to make air.

No word if Jay even noticed.

During an interview with Jimmy Baron from 92.9 Dave-FM Atlanta this weekend, Garlin -- a long time friend and former roommate of Conan O'Brien -- claims NBC was "stupid" to replace Leno with Conan in the first place ... but says Leno derailed Conan's chances for success by doing the 10 o'clock show.

A Conan O'Brien fan posed for a photo with Jay Leno last night with the letters "Coco FTW" written on his hand -- which means "for the win."

Leno got the "Tonight Show" back and Conan got $32.5 million from NBC -- they're both winners.