Joel Arbaje 12.29.11 3:10 AM Comedy writing has two main ingredients, Conan O'Brien says. Part one: left-brain bullshitting. Part two: seeing ideas up on their feet, in rehearsal, and then reworking them. Photo by Matthias Clamer See more of the best photos of 2011 We’re giving away 5 tickets to the Innovation Festival! Enter below. I’ll also get special updates regarding the Innovation Festival Send I'd also like to receive the Fast Company Daily newsletter.