Bonnaroo 2011 Lineup Features Eminem, Lil Wayne

Rap stars Eminem and Lil Wayne were among the biggest names announced as part of this summer's Bonnaroo lineup today. Pop sensation Robyn and surprise Grammy Award winners Arcade Fire will also be part of the annual four-day festival's most diverse lineup yet.

'Black and Yellow' rapper Wiz Khailifa will also represent hip-hop, and in big news for your parents, rock legend Neil Young will reunite with his original band, Buffalo Springfield. Getting back to the pop side of things, concert-goers can also expect exciting sets from Florence and the Machine, Big Boi, and the Scissor Sisters.

Comedian Conan O'Brien, himself a former Bonnaroo performer, announced the lineup via YouTube today, mostly because, in his words, "I can't stop saying Bonnaroo." Tickets for the festival go on sale Saturday, Feb. 19 exclusively through the official Bonnaroo website. (He's right, that's even fun to type!)