California Dreamin': The Songs of the Mamas & the Papas is a one-hour documentary prepared for public television, to be shown during pledge drives to get those baby boomers to call in and contribute. As its title and the TV-G rating that pops up right at the beginning suggest, this look at the group is more interested in the music than in wallowing in the backstage scandals much loved by, for example, VH1 Behind the Music, which spent a very different hour chronicling the Mamas & the Papas' career a few years earlier.