Someone once posted that a player had 7 fouls and still kept on playing.Then, how about this, coming straight from the dark ages of BB(999)18, 15 and 10 fouls. And yes, I'm aware that Puertorico didn't have any players on the court, but it's still very cool.
Under NBA rules, if all other players on your team are already fouled out... you can actually keep playing past 6 fouls. I don't think I've ever seen a game where that was close to happening though.