Los Angeles ? Pop stars rocked the MTV Movie Awards on Saturday, with rapper Will Smith winning the best actor award for “Ali” and singer Mandy Moore claiming breakthrough actress honors for “A Walk to Remember.”

“I’m a baaaad man,” exclaimed Smith, taking the stage in a Muhammad Ali imitation.

Actress Natalie Portman arrives at the MTV Movie Awards in Los Angeles. Her film, Star

Smith thanked his wife for putting up with the long filming schedule of the boxing movie.

“But it wasn’t all bad, because I got in real good shape,” he said.

The award for best action sequence went to “Pearl Harbor.” Director Michael Bay accepted the trophy, a gilded popcorn bucket, and dedicated it to the thousands of lives lost in the real life bombing that thrust the United States into World War II.

“American Pie 2” claimed the best kiss award for a same-sex lip-lock between stars Jason Biggs and Seann William Scott.

In his acceptance speech, Scott thanked the dozens of girls he has kissed dating to his days as a sixth-grader.

“Shrek,” “Legally Blonde,” “The Fast and the Furious,” “Black Hawk Down” and “The Lord of the Rings: The Fellowship of the Ring” were competing for favorite movie honors at the ceremony.

The comically anti-authoritarian event celebrated Hollywood by playfully mocking it.

The show began with a short parody of the hit movie “Spider-Man,” in which Peter Parker’s spider bite turns him into portly co-host Jack Black.

	MTV will broadcast its annual movie awards show at 8 p.m. Thursday on Sunflower Broadband Channel 57.

The ceremony placed an emphasis on fashion and comedy in recognizing popular films, performances and cinematic moments from the past year.

Denzel Washington, who won a best actor Oscar for playing a crooked police officer in “Training Day,” was nominated by MTV for best villain. His competition included Zhang Ziyi from “Rush Hour 2,” Christopher Lee from “The Lord of the Rings,” Tim Roth from “Planet of the Apes” and the late singer Aaliyah from “Queen of the Damned.”

The show, taped at the Shrine Auditorium in Los Angeles for broadcast Thursday, was co-hosted by “Buffy the Vampire Slayer” star Sarah Michelle Gellar. Among those presenting were Nicolas Cage, Charlize Theron, Freddie Prinze Jr. and Vin Diesel.

Live performances included Eminem and Kelly Osbourne, daughter of rocker Ozzy Osbourne, whose family “reality” show is MTV’s biggest hit ever.

Winners were determined by a nationwide survey of MTV viewers, with nearly 8 million votes collected online.