This year's Oysterfest pairs plenty of the famous aphrodisiac mollusk with bubbly, beer, and a pack of dedicated gluttons stuffing their faces in a shucking-and-swallowing competition. Of course, if bivalves aren't your thing, then you should still come for the music: Saturday features Celtic punk rockers Dropkick Murphys, Hollywood brats Juliette Lewis & the Licks, and the vaudeville extravaganza of the Yard Dogs Road Show. Sunday's lineup is just as tantalizing, including a set from She & Him, the dynamic, dreamy-eyed duo of M. Ward and Zooey Deschanel.