JOHN PHILLIPS' "California Dreamin'" became Mackenzie Phillips' California nightmare.

Mackenzie has been in and out of trouble so often over the past few decades it's hard to believe anything about her crazy life could still come as a surprise, but you don't get to talk with Oprah unless you have some big beans to spill.

The daughter of the '60s pop legend (a co-founder of the Mamas and the Papas), told the talk queen yesterday that daddy raped her when she was a teen and that her sexual relationship with him later became "consensual."

The incestual creepiness - the first time occurred on the night before she was to get married in 1979 at age 19 - is told in inglorious detail in Mackenzie's new book, "High on Arrival."

She writes: "I woke up that night from a blackout to find myself having sex with my own father."

She told "The Oprah Winfrey Show" that her siblings "definitely have a problem" with her coming forward, and Oprah also read a statement from Genevieve Waite, John's wife at the time of the alleged abuse and Mackenzie's stepmother. Waite's statement said John Phillips was "incapable, no matter how drunk or drugged he was, of having such a relationship with his own child."

Mackenzie, 49, who starred on TV's "One Day at a Time," in the '70s, said the sexual relationship with dad lasted a decade and ended when she became pregnant and didn't know if her own father might be the father. She had an abortion, which dad paid for, "and I never let him touch me again," she said.

Mackenzie told Oprah that dad not only had sex with her, but he also got her hooked on drugs, teaching her to roll joints and injecting her with cocaine. Miniature golf just didn't cut it.

Mackenzie told Oprah she's been clean for a year (applause, applause) after pleading guilty to possessing cocaine and entering a rehab program following her arrest last year on her way to a "One Day at a Time" reunion.

Mackenzie said she doesn't hate her father, who died in 2001 of heart failure at age 65.

"I understand that he was a very tortured man and . . . passed that torture down to me," she said.

Travolta takes

the stand

Speaking of torture, John Travolta said yesterday that he had tried desperately to save the life of his son, Jett, as he testified in the trial of two people accused of trying to blackmail him.

With his wife, Kelly Preston, looking on inside the Nassau, Bahamas, courtroom, Travolta said that he performed CPR on his son after a nanny alerted him that the teen had fallen ill at a family vacation home on Grand Bahama island. Jett Travolta later died of a seizure.

Travolta is the star witness at the trial of two people - paramedic Tarino Lightbourne and former Bahamas senator Pleasant Bridgewater - who are accused of trying to extort $25 million from him. Both defendants pleaded innocent to extortion charges at the trial, which began Monday.

Travolta testified that a nanny awakened him and Preston about 10:15 a.m. on Jan. 2, the day of Jett's death. Travolta said that when he went downstairs, another caretaker was doing chest compressions and that he began administering breathing help.

Travolta also said - apparently for the first time in public - that 16-year-old Jett was autistic, confirming speculation that had swirled for years.

Travolta said Jett suffered seizures every five to 10 days. He said that the seizures would last 45 seconds to a minute and that Jett typically slept for 12 hours after each one.

Tattbits

* L.A. prosecutors have brought

more charges against the lawyer-boyfriend of Anna Nicole Smith.

The D.A.'s office filed an amended complaint yesterday against Howard K. Stern. He is billed as an aider and abettor of two doctors charged with prescribing drugs that killed the former Playboy model in 2007.

The new charges against Stern include accusations that he helped get prescriptions for opiates with a false name. Dr. Sandeep Kapoor and Dr. Khristine Eroshevich already faced those charges.

All three pleaded not guilty in May and re-entered their pleas yesterday to the amended complaint.

* Kiss, LL Cool J and the Red Hot Chili Peppers are part of an eclectic group of 12 acts in contention for the 2010 class of the Rock and Roll Hall of Fame. Other first-time nominees include Genesis, Jimmy Cliff, the Hollies and Laura Nyro.

Some of the names on the ballot are repeats - Donna Summer, Darlene Love, ABBA, the Chantels, and the Stooges.

Only five acts make it in. The 25th annual induction ceremony is slated for March 15 in New York City. The inductees will be announced in December.

Given some of the nonrock acts already in the Hall, how could ABBA not be in?

* A new Michael Jackson song

titled "This Is It" will be released on Oct. 12.

The song features backing vocals by Michael's brothers and is part of a two-disc album of music inspired by the upcoming "This Is It" film, which chronicles Jackson's final days rehearsing for his comeback concerts.

"This song only defines, once again, what the world already knows - that Michael is one of God's greatest gifts," said John McClain, a co-executor of Michael's estate.

* "Grey's Anatomy" star Ellen

Pompeo has given birth to a daughter.

Pompeo's rep, Amanda Silverman, says Stella Luna Pompeo Ivery was born Sept. 15. No other details were available.

Therefore no one knows if Dr. Meredith Grey delivered the baby herself, then saved her own life when threatening complications ensued, thus becoming the first doctor ever to perform surgery on herself and deliver her own baby while under sedation.

Daily News wire services contributed to this report.

E-mail gensleh@phillynews.com