Eric Seidel was to my immediate right one time in a charity tourney at FTP. I had A-A in the BB, and it was folded around to Seidel who limped in from the SM . Knowing he's a big time blind defender, I made a baby raise with the aces, which he insta-called. Flop was unconnected. He quickly checked; I made a fake CB of just under half the pot, and he check-raised me. I figured he was bluffing--besides I had an overpair mid-tourney--so I went all-in. He thought about it a long time before he folded. I don't usually show, but I showed the aces, and he said NH. The folded check-raise and pre-flop raise call hurt his stack, and he started making shortstack all-ins starting at the next blind level. Andy Bloch was also at our table, but he showed up late, then got knocked out the first hand he played. Seidel gave him a lot of crap about it.
I tried to play low stakes ring against David Oppenheim one time, but the computer kept lagging so I had to stop. I played the same stakes against Perry Friedman a few days later, and won a hand against him making a continuation bet with A-K to a rag board. He didn't stay long, but no one did as it was around the holidays.