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Gary Busey was nominated for an Academy Award in 1978 for his portrayal of Buddy Holly... and this week he resurrected the role at a karaoke bar in Malibu.

Busey busted out a rendition of "Maybe Baby" at Cafe' Habana Wednesday night -- and the crowd went nuts.

Check out Busey tearing it up in "The Buddy Holly Story" back in '78 (below).

Nickelodeon star Ryan Rottman pled not guilty to DUI Thursday ... insisting he did not drive drunk after hanging out at a Hollywood bar with his BFF Zac Efron last month ... TMZ has learned.

As TMZ first reported ... Ryan was arrested on July 8 -- minutes after leaving Dillon's Irish Pub where he partied with Zac and Rumer Willis.

During Rottman's arrest, Efron -- who was still hanging out in the area -- was seen pacing around on his cell phone.

Law enforcement sources tell us ... Rottman's blood alcohol level was .19 -- more than twice the legal limit.

Rottman is due back in court next month.

Seth Benjamin Gesshel-Green will soon be half the Jew he used to be -- TMZ has learned the actor is dropping his mom's maiden name "Gesshal" ... and sticking to just plain Green.

TMZ has obtained the petition filed by the "Robot Chicken" producer in L.A. County Superior Court this month -- asking a judge to legally shorten his name to Seth Benjamin Green.

Seth claims the reason for the name change is "to reflect my professional stage name."

Now -- just like Mr. World Peace -- Seth is required to print a public declaration of his new name in a local newspaper once a week ... for 4 weeks in a row.

TMZ has learned ... Chaz Bono will be hitting the hardwood on the new season of "Dancing with the Stars."

Multiple sources connected with the show tell us ... Chaz has signed on and will be partnered with a female professional. Makes sense, because Chaz is legally a man ... baby.

This picture of Steve Jobs was taken today -- two days after he resigned as the head honcho of Apple.

Score one for Halle Berry in the latest custody battle with baby daddy Gabriel Aubry.

TMZ has learned Halle and her lawyers, Neal Hersh and Judy Bogen, prevailed in court today -- as both she and Gabriel stood by while their lawyers argued before the family law judge.

We're told the issue had to do with the custody agreement the couple signed. There's a provision in the agreement dealing with how much time each of them gets to spend with Nahla when Halle shoots a movie.

Halle is going to Europe soon to shoot a flick, and Gabriel and Halle were arguing over the "movie clause" -- specifically, how they're supposed to divide their time with Nahla.

We're told the judge bought Halle's interpretation of the "movie clause," meaning Gabriel won't get as much time with Nahla as he wanted.

• Halle Berry Claims Gabriel Violated Custody Agreement
• Halle Berry In Court -- Trouble Brewing Over Custody
• Halle Berry, Gabriel Aubry Back In Court -- No Deal

Halle Berry is squaring off right now with her baby daddy, Gabriel Aubry, as yet another battle has erupted over custody of 3-year-old Nahla.

We've learned Halle's lawyer, Neal Hersh, has filed legal papers asking the judge to hold Gabriel in contempt for allegedly violating the custody deal.

The Kris Jenner media train is plowing right through NBC and CBS -- Kim Kardashian's mom has just been tapped to guest co-host "The Today Show" AND "The Talk."

Jenner will reportedly fill-in for Sharon Osbourne on "The Talk" in September ... and with all the cuts producers have made on that show recently, it wouldn't be shocking if she got a permanent offer.

Leonardo DiCaprio and Tobey Maguire took a joy ride in a vintage 1929 Duesenberg convertible with some pals while on the set of "The Great Gatsby" in Sydney on Thursday.

It's no $100K hybrid but it'll do.

Six months after they separated, "Little House on the Prairie" actress Melissa Gilbert has filed for divorce from actor Bruce Boxleitner ... TMZ has learned.

According to documents filed with L.A. County Superior Court, Gilbert blamed the split on irreconcilable differences ... and she's asking for joint legal and physical custody of their son Michael.

Melissa and Bruce married in 1995 ... but separated back in March. They have one child together ... and each have adult children from previous marriages.

Jaime Pressly won't get any jail time for her recent DUI arrest -- when she registered a blood alcohol level of nearly THREE TIMES the legal limit -- because she just struck a sweet deal with prosecutors.

TMZ broke the story -- Jaime was arrested for DUI back in January after blowing a .22 ... and in case you didn't know, the legal limit in Cali is .08.

The "My Name Is Earl" star was charged with two counts of DUI -- driving under the influence, and driving with a blood alcohol level of .08 or higher.

But according to court personnel, the first count was dropped after striking a deal with prosecutors -- and Jaime pled "no contest" today to the second ... in exchange for three years probation.

Had she not struck the deal, Jaime could have faced as many as six months in jail.

David Arquette will show what he's got on "Dancing with the Stars" ... sources close to the deal tell TMZ.

David showed up to the rehearsal studio a few minutes ago, to meet his partner for the first time. We're told he's hooking up -- professionally, in a dancing sort of way -- with Kym Johnson.

The new season starts at the end of September.

The Banks family still has each other's backs -- because last night in Hollywood, Alfonso Ribeiro went to bat for his TV cousin ... telling TMZ that Will Smith and Jada Pinkett Smith are "all good" and definitely NOT getting a divorce.

It's the end of "The World" for Paris Hilton -- because her new reality show has been cancelled after its one and only season ... this according to a new report.

NYMag.com reports the Oxygen Network will not renew "The World According to Paris" ... after repeatedly scoring abysmally low in the ratings.

However, a rep for the show tells us, "The show just recently completed its run and no pick up decision has been made."

Multiple members of the crew that work on "HawthoRNe" tell TMZ ... it was clear to everyone that Jada Pinkett Smith and Marc Anthony were not intimate on the set.

The crew members we spoke with say ... they never saw anything inappropriate occur on the set. They add ... it seemed as if Jada and Marc went out of their way to squelch rumors. They would never run their lines together in their trailers but rather would do it out in the open, with an acting coach present.

And 3 crew members noted that Will Smith would sometimes come to the set while Jada was filming and, as one of them put it, "It looked like they were on their honeymoon." No one we spoke with saw any conflict between the two.

Dina Lohan apparently thinks she's Dina De Laurentiis ... because she's telling investors she can snag some of the biggest actors in Hollywood for her new movie.

TMZ has obtained a copy of the business plan Dina's sending to prospective financiers -- asking for a grand total of $5.28 million to shoot an R-rated film called "Growing Defiant" -- which takes "a hard look at the social pressures that can lead a kid in the wrong direction." Hmmm.

According to the business plan, the actors she'll go after include Dakota Fanning, Selena Gomez, Michael Cera, James Gandolfini, Susan Sarandon, Tina Fey, Amanda Seyfried, Hayden Panettiere, Emma Stone, and Mila Kunis ... oh, and Michael Lohan, Jr. in the starring role of a heroin addict.

Now here's the best part. There's an asterisk at the bottom of the plan, which reads, "The cast listed above is a suggested cast list only. Michael Lohan is the only cast member who has been signed."

And Dina apparently thinks big actors will do anything to sign on, because she's allotting a grand total of $1,125,000 for actors' fees.