Bonnaroo's lineup this year was already full of the funny, with comedians Janeane Garofalo, David Cross, Zach Galifianakis, Brian Posehn, and others set to appear. Now the fest just got more comedy, and more Rock. As in Chris Rock. The comedic titan will put in a one-hour set on one of the fest's main stages. Bonnaroo's organizers expect the crowd to be one of the largest to ever take in a comedy show. No word yet on which day of Bonnaroo's June 12-15 long weekend Rock will appear.