I am currently in LA attending a workshop at IPAM. This is right after attending FOCS in Berkeley. FOCS was accompanied by a "Rock Show" organized by people from the Berkeley theory group. It is not everyday that you find your professors singing smells like teen spirit and cocaine (with the word cocaine of course replaced by the more appropriate caffeine). Here's a picture of Dick Karp dancing to Christos' tunes. Luca presents a more detailed account of the concert.