The groovy dude in the picture isn't just any mustachioed hippie with a fringe jacket and a psychedelic bus. It's none other than Bono, playing the role of "Dr. Robert" in the upcoming musical 'Across the Universe' (Sept. 14).

Bono's character in the film was based on Jack Kerouac muse Neal Cassady. "We studied film of him and the way he worked, and it's almost like he wanted to be a rock star," Bono said of Cassady. "He has all these jerky moves, a lot of self-confidence, always plays to the women in the room. For my first acting role, I thought this would be interesting and a little bit special."

'Across the Universe' is director Julie Taymor's brainchild, mixing an original story set in the 1960s with a soundtrack of 33 Beatles songs. One of these songs is 'I Am the Walrus,' which Bono performs as the merry Dr. Robert.

Watch Bono's 'I Am the Walrus' after the jump.