I have the ultimate bad beat. In a .25/.50 NL cash game. A couple folds then the guy in middle position raises to $2. He gets one cold call behind him and I raise to $10 in 9th position with AA (I always overbet the pot with preflop raises). Both blinds fold but the other two cold call. Flop comes AA9, so I have quads! Both check to me and I check. Turn comes a jack, giving 3 spades on the board, and the first player checked. The next player moves in with $45 (more than the pot) and I cold call. The first player also calls which sets him all in as well. river comes a king of spades. The first player had pocket jacks, full house. Next player had TQs so he got a straight flush on the river! I showed my bullets and signed off.