Backstreet Boys + Jesse McCartney + DJ Pauly D

Backstreet's back, all right: Surely not content to let New Kids on the Block (who are also touring this summer) have all the fun, Orlando's Backstreet Boys head to LA for a show at the Gibson. Apparently they've released three albums since they faded from the limelight (two since original member Kevin Richardson left the band), including 2009's clumsily-titled This Is Us. We're just as surprised as you are.