RIP

Famous '70s TV star Dan Haggerty -- who played Grizzly Adams -- died from cancer early Friday morning ... TMZ has learned.

Haggerty died after battling cancer for the last few months. Sources close to Dan's family tell us doctors discovered the cancer after he had surgery for back pain.

Haggerty starred in the 1977 hit TV show "The Life and Times of Grizzly Adams" as the lovable mountain man whose BFF was a grizzly bear. He also guest starred on several TV shows like "CHiPs" and "Charlie's Angels."

Haggerty was getting treatment in a hospital until recently when doctors told him the end was near and his son told close friends and family to come visit over the last few days before he passed.

Bunny Ranch owner and friend of Haggertys Dennis Hof tells TMZ, "Grizzly Adams was my friend for 20 years, the Bunnys loved him, he loved to drink with the Bunnys and told amazing jokes."

Dan was 74.

Celine Dion's husband's long battle with cancer ended Thursday morning ... he died at their home in Las Vegas.

Rene Angelil was diagnosed with throat cancer in 1998. His health got so bad last year that Celine took a leave of absence from her Las Vegas show to take care of him.

Sources close to Celine tell us Rene's death was completely unexpected because recently he's felt much better. In fact, we're told he and Celine had planned business meetings together for today.

We've learned Celine has already cancelled the 2 shows she was scheduled to do at Caesars Palace this weekend. She's set to return on Feb. 23rd.

Rene and Celine got married in 1994 and he managed her for years. They have 3 sons, a 14-year-old and 5-year-old twins. Rene also has 3 other children from a previous marriage.

People first reported Rene's death. He was 73.

TMZ Sports has obtained the Lawrence Phillips' 911 call -- in which a prison staffer tells the operator to send help because the ex-NFL star "has attempted suicide right now."

During the call, the staffer says he's in the dark about Lawrence's condition or how he tried to take his own life ... but says he was instructed by other Kern Valley State Prison staffers to call for an ambulance asap.

By the way, officials say the call came in to 911 at 12:14 AM -- 9 MINUTES after prison officials say they found Phillips unresponsive in his cell.

As we previously reported, Phillips' next of kin -- along with his biological mother and his lawyer -- do NOT believe Lawrence committed suicide ... and are demanding an investigation into the death.

Alan Rickman -- perhaps best known for playing Professor Snape in the 'Harry Potter' films -- passed away, his family announced Thursday. He was 69.

Rickman had been suffering from cancer and was surrounded by family, they said.

The British actor's first major role was playing Hans Gruber opposite Bruce Willis in "Die Hard."

Rickman took home a Golden Globe and an Emmy for his lead role in the 1996 HBO movie "Rasputin: Dark Servant of Destiny."

David Bowie won't soon be forgotten anywhere, but especially not in L.A. where artists are throwing up HUGE tributes.

The most prominent one went up on the office of Timewarp Music -- Jules Muck painted a mural of Ziggy Stardust era Bowie chumming it up with another rock icon ... Motorhead frontman Lemmy, who died last month.

Another piece of graffiti appeared hours after Bowie's death Sunday night -- his name was spray painted on wall in the middle of Hollywood. That one didn't stick though ... it was painted over by Tuesday morning.

Lawrence Phillips' biological mother -- and the people closest to him -- do not believe the ex-NFL star committed suicide in his prison cell ... with his next of kin telling TMZ Sports, "I know for a fact he wouldn't do that."

We spoke with Tonissa Murdock -- who was listed as Phillips' next of kin with Kern Valley State Prison due to their close relationship for more than 20 years.

Ex-NFL star Lawrence Phillips is dead -- and officials are investigating his death as a suicide after he was found in his prison cell.

Disney star Michael Galeota, who died Sunday at 31, had a rough road to the end.

Galeota struggled with alcohol issues, racking up 3 DUIs from 2006 - 2015. The last DUI -- in September -- was an ongoing case. He served jail time on a few occasions for violating his probation in alcohol-related incidents.

The actor, who starred in "The Jersey" on the Disney Channel, had a history of hypertension and high cholesterol. He also battled diverticulitis, inflammation of the digestive track.

Natalie Cole was eulogized by an all-star lineup of Grammy winners.

Stevie Wonder, Lionel Ritchie and Smokey Robinson all attended and paid tribute to the singer at West Angeles Church of God in Glendale, CA. Chaka Khan reportedly sang at the funeral.

Also there, Rev. Jesse Jackson, Angela Bassett and David Foster ... who produced Cole's Grammy winning Album of the Year "Unforgettable ... With Love."

While you're busy humming David Bowie tunes today, up and coming artists can learn something from the icon that has nothing to do with hitting notes ... according to Gene Simmons.

The KISS rocker was in Hollywood Monday and told us about the first time he met Bowie in a recording studio, back in 1975. He says one thing in particular stood out to him -- that he'll never forget -- about the Thin White Duke.

Michael Galeota, star of "The Jersey" on the Disney Channel, has died ... TMZ has learned.

We're told the actor went to the hospital last week after complaining of abdominal pains and left last Wednesday ... against the doctor's advice.

Michael went radio silent over the weekend, and one of his friends went to his Glendale home Sunday to check on him. Michael didn't answer, so the friend climbed through a window and found his body lying in the living room.

We're told Michael had a history of hypertension and high cholesterol. He also battled diverticulitis -- inflammation of the digestive tract.

Our sources say he was not following medical advice. So far it's being treated as a death from "natural causes." An autopsy is pending.

Michael was 31.

RIP

A ton of Hollywood celebs gave David Bowie the perfect salute after the Golden Globes -- a full-on dance party to the icon's biggest hits.

The impromptu tribute went down at HBO's after-party Sunday night. Jon Hamm, Harrison Ford, Rob Lowe, Jonah Hill and even Mel Gibson stopped by for the party at the Beverly Hilton.

We're told when news of Bowie's passing broke, the DJ started spinning Bowie's hits late into the night, and you can see ... the crowd LOVED it.

Groundbreaking rock star David Bowie died Sunday from cancer at the age of 69.

Bowie was surrounded by his family when he died ... according to the announcement posted on his Facebook page. He'd been diagnosed with cancer 18 months ago.

He was a huge innovator in glam rock, art rock, dance, punk and electronica. Bowie made a splash in the 70s with his famous Ziggy Stardust alter ego and went on to crank out hits like ... "Space Oddity (Major Tom)," and "Ziggy Stardust," "All the Young Dudes," "Let's Dance" and "Modern Love."

In 1981 he teamed up with Queen for the classic, "Under Pressure."

Bowie was also successful as an actor and music producer -- and got inducted into the Rock and Roll Hall of Fame in 1996. He'd been married to supermodel Iman since 1992.

He just released his 25th album, "Blackstar" ... on January 8th, which was also his birthday.

David Bowie's ex-wife, and mother of his first child, is choosing to stay locked up in the 'Big Brother' house after getting the news of his death.

Angie Barnett just happens to be on "Celebrity Big Brother" in the UK right now. Producers say they told her about Bowie's passing, but she has "taken the decision to continue in the program" ... even though they've given her the option to bow out.

Bowie and Angie -- a model and actress at the time -- got married in 1970 and stayed together for 10 years. Their son Duncan Jones is a filmmaker.

66-year-old Angie talked about their breakup during a recent episode of 'BB.'

Rob Lowe was shaken by the news of David Bowie's passing, but still took the time Sunday night outside of Craig's to share his thoughts on the rock legend ... including his favorite Bowie track.

There's really no wrong choice.

Hundreds gathered for Motorhead frontman Lemmy's memorial service Saturday at Forest Lawn in Hollywood.

A livestream with almost 250k viewers broadcast the event for the rock star's fans around the world. His son, friends, Triple H, band mate Mikkey Dee and producer Bob Kulick spoke about some of their favorite memories with Lemmy.

A custom made urn replicating his signature hat was even there made by Foreverence.

He passed away last month after battling a very aggressive form of cancer.

R.I.P.