It's that time again. Somerset is about to be besieged by hippies, hipsters and the most eclectic array of acts in the world. The most famous festival on the planet is gearing up for another carnival of madness and wind, rain or shine (probably all of the above), Glastonbury Festival of Contemporary Performing Arts 2011 looks set to be another unforgettable weekend.

The famously hard to digest line-up is as diverse as ever, so to try and make things a little easier, we've highlighted 20 acts from this year's lineup.