How much head-banging can you do in a single day without giving yourself whiplash? Annual mosh-fest Punkspring invites impressionable young teens (and a fair few people who should probably know better by now) to find out for themselves. This year's is headlined by uncomplicated pop-punk quintet Good Charlotte and dreary rockers Hoobastank, though the more interesting acts lurk further down the bill. Get a history lesson from punk grandpas the New York Dolls and Dead Kennedys, check out homegrown hardcore veterans Brahman, or just party till you puke with the ever-reliable Andrew W.K. See below for full line-up.