Will Michael Jackson Movie Put the Kibosh on Critics?

Oct. 27, 2009— -- When the Michael Jackson film, "This Is It," opens worldwide tomorrow, fans and naysayers will be able to judge for themselves whether the King of Pop still had the chops to perform.

Orianthi, the guitarist he picked to perform his London shows, told "Good Morning America" today that Jackson was "full of energy."

"On stage, he was keeping up with the 24-year-old dancers," she said. "He was up there, doing his thing. He wasn't sitting in the corner and looking ill, not able to participate. He was on stage with everybody."

Despite the footage, which shows Jackson at his final rehearsal before his death, even family members have expressed their doubts about the film. Jackson's father Joe Jackson accused concert promoter AEG, which produced the film, of using body doubles for his son.

Jackson's former manager Frank DiLeo shot down that notion.

"No that's not true," DiLeo told "GMA." "What you see is Michael Jackson…exactly what you see on stage is exactly what he was in real life."

DiLeo compared Jackson to another Michael – Michelangelo.

"If we were able to watch Michelangelo decide what colors to put on the Sistine Chapel, what drawings, that's what Michael did…and everybody will get to see that," he said.

Last Thursday, about 30 family members and close friends attended a private screening of the movie. Jackie Jackson, however, was the only sibling there.

"My brother's movie 'This Is It' is truly riveting," he told TMZ. "Michael is electrifying! We get a glimpse of a true genius at work. His passionate message for healing the world, saving the planet and our children's futures is something he was always striving for in his lifetime."

Other Jackson family members think watching the film would be too much to bear and will likely not be attending tonight's red carpet premiere in Los Angeles. Tonight's invited guests include Adam Lambert, Mike Tyson, Snoop Dogg, Smokey Robinson, Jennifer Love Hewitt and Rev. Al Sharpton.