RIP

Don gave future superstars like The Police and Billy Joel early national exposure -- and also worked with everyone from Carole King and Bobby Darin to Black Sabbath and the Allman Brothers.

In the 70s, he hosted "Don Kirshner's Rock Concert" on ABC.

Her record label posted a statement on their website -- which reads, "It is with great sadness we announce that Trish Keenan from Broadcast passed away at 9am this morning in hospital. She died from complications with pneumonia after battling the illness for two weeks in intensive care."

Nelson was the last surviving member of the cast. The show, which ran from 1952 - 1966, featured David, his brother Ricky (who was also a huge singer), and parents Ozzie and Harriet.

Ricky Nelson -- who's hits include "Garden Party" and "Hello Mary Lou" and "Travelin' Man" -- died at age 45 in a plane crash in 1985.

David -- who died of complications from colon cancer -- is survived by his wife and five children.

Erwin is probably best known to younger audiences for his guest role on "Seinfeld" -- but he appeared in numerous shows, including "I Love Lucy," "Perry Mason," "Leave It to Beaver," "The Twilight Zone," "Gunsmoke," "The Golden Girls," "Growing Pains" and "Who's the Boss?"

Peter died Sunday in a hospital near his English home.

Nominated for an Oscar for his role in the 1993 film "In the Name of the Father," Postlethwaite also starred in movies like "The Usual Suspects," The Lost World" and most recently in "Inception" and "The Town."

Co-Executors John Branca and John McClain fired off a vitriolic letter to the Prez of Discovery -- obtained by TMZ -- in which they accuse the network of operating in "shockingly bad taste ... motivated solely by your blind desire to exploit Michael's death, while cynically attempting to dupe the public into believing this show will have serious medical value."

The Co-Executors are particularly outraged by a print ad, depicting a corpse sprawled on a gurney, covered by a sheet with a sequined glove sticking out.

We're told officials searched Teena's home in Pasadena , CA -- but only found some herbal medication -- and we're not talking marijuana.

We're told an autopsy and toxicology tests will be performed on her body later this week -- but so far, officials are leaning towards the theory that she died of natural causes.

As we previously reported, Teena -- once considered Rick James' protégée -- suffered a grand mal seizure just one month ago.

Relatives found Teena's body Sunday morning at her home. Relatives tell TMZ Teena seemed fine yesterday, when she spent Christmas with her brother. Teena spoke at length yesterday with Lynn, who tells TMZ Teena seemed "fine."

So far it's unclear what caused the singer's death -- but the Pasadena Police Department tells TMZ they do not suspect foul play. They say it looks like Teena died of natural causes. The L.A. County Coroner's Office will perform an autopsy.

We're told Teena had a seizure a month ago, but it's unclear what triggered it.

Marie was nominated for a Grammy four times ... her first top ten hit was "I'm Just a Sucker for Your Love."

We're told Landesberg died of cancer early this morning. He had been battling the disease for a while.

Landesberg played Dr. Rosenbaum -- the pediatrician -- in "Sarah Marshall." But he was more famous for his role as Det. Sgt. Arthur Dietrich on the TV show "Barney Miller," which ran from 1975 - 82.

Blake Edwards -- who was married to legendary actress Julie Andrews -- is famous for directing movies like "Breakfast at Tiffany's," "Victor/Victoria" and the classic "Pink Panther" film series.

In 2004, Blake received an honorary Oscar for his extraordinary body of work.

After Cruz was sentenced on Monday, we decided to track down the three men he tried to hire to kill his wife -- that's when we were told of Big Dave's demise.

Big Dave died back in August after suffering from a brain hemorrhage. One of the other homeless heroes, Shane, tells us Dave had been sick for awhile.

Madoff was found hanging in his SoHo apartment by his father-in-law. His 2-year-old child was also in the apartment at the time.

Mark Madoff, 46, was investigated -- along with his brother Andrew -- as part of his father's Ponzi scheme, but never faced any criminal charges.

An attorney for Mark Madoff released a statement saying, "This is a terrible and unnecessary tragedy. Mark was an innocent victim of his father's monstrous crime who succumbed to two years of unrelenting pressure from false accusations and innuendo."

53-year-old Jeffrey David Kirby was convicted today of gross vehicular manslaughter while intoxicated -- a felony -- for causing the high speed crash that killed TapouT founder Charles "Mask" Lewis back in March 2009.

As we first reported, Lewis' $300,000 Ferrari was ripped in half after it careened off an Orange County road -- hitting a light pole, and killing him nearly instantly.

According to local reports, 61-year-old Elizabeth -- who was married to former presidential candidate John Edwards -- had been surrounded by friends and family in recent days including John himself.

Just yesterday, Elizabeth posted a goodbye message on her Facebook page which read, "The days of our lives, for all of us, are numbered. We know that. And yes, there are certainly times when we aren't able to muster as much strength and patience as we would like. It's called being human."

She continued, "But I have found that in the simple act of living with hope, and in the daily effort to have a positive impact in the world, the days I do have are made all the more meaningful and precious. And for that, I am grateful."

Santo overcame juvenile diabetes to become a nine-time all-star with the Cubs. He is widely regarded as one of the best players not to be in the Hall of Fame.