My most memorable one was in a Sit and Go I was 4th. I'm on the button with pocket aces. I 3x it and the SB folds and BB shoves with 9-10 suited. Sure enough he cracked my aces and I was felted.
I also had a real bad run pocket KK several times in one day.
But for every sob story I have I also have a story to match it where I put a sick bad beat on someone else.