The Ig Nobel Prizes -- the annual spoof of the real Nobels -- were announced Thursday night. Prizes honored breakthrough discoveries on the impact on mice of listening to the opera, of beer on self-perceptions of one's physical attractiveness (it turns out that if you drink a lot you will think you are more attractive) and of the probability of cows lying down and standing up. Details are available here. (The real Nobels are announced next month.)