Rattle and Hum is not a film for anyone looking for an introduction to Irish band U2's career in the 1980s, but it is a vibrant portrait of an established group making its musical pilgrimage through the America it has always imagined, from blues and gospel to early rock 'n' roll. Filmmaker Phil Joanou (Heaven's Prisoners), a veteran music-video director and maker of the distractingly kinetic Three O'Clock High, finds a suitable outlet for his high energy in this juggernaut of a journey, which finds U2 collaborating with a black gospel choir and BB King, recording inside the legendary Sun Records studio, dropping by Graceland, and in a moment of fearlessness, performing the Beatles' "Helter Skelter" to exorcise Charles Manson's sick claim on the song