Two big cash/tourney guys were playing $50 flips at NL50 while I was sitting at the table. So, I got on the table, sat down, and waiting for a hand...and cleared a bonus rather quickly as well. The only thing I regret was not being up to $50 at the time, but I was close.
http://www.pokerhand.org/?758315
Afterwards, Bigegypt told me my VPIP was at 1.9! Sound play I figure. 25/50 players flipping make my day.