This collection of Michael Jackson retreads from the Motown era seems to walk the line between shameless cash grab and worthy tribute. Generally, the best cuts here stay close to the spirit of the originals: Of the three takes on the Jackson 5's "Dancing Machine," one is great (Polow Da Don's disco-hip-hop celebration), and two ain't (overdone techno overhauls by DJs Steve Aoki and Paul Oakenfold). But there are exceptions. On producer Salaam Remi's outrageous reggae version of "ABC," Michael's junior James Brown testimony will make even purists grin like fools. In the end, Jackson proves to be more mutable than maybe even he knew.