For this poll to have any value (to me) I think a distinction should be made between "cheating" and "breaking the rules".
The examples in most of these posts seem to be rules violations that, when detected, are subject to a stipulated penalty. It's like in hockey - two minutes for high sticking or interference - or even offside for that matter whether intentional or not. These are rules violations just like jarring and time of possession fouls in foosball. I'm know that Gretzky and Lemieux made it to the penalty box on a number of occasions - and often with intent to break the rules - but I don't think they would be regarded as "cheaters". (IMO anyway). If so, then pretty much every athlete in every sport is a cheater and the simple answer to this poll is "YES". That is as long as you've played a sport and been called for travelling, double-dribble, out of bounds, offside, icing the puck, late hit on the quarterback, illegal receiver downfield etc etc
But prohibited steroid use, throwing a game, and illegal equipment (corked bat, foreign substance on a pitched ball) are what I would consider cheating. Or in a card game where you deal from the bottom or look at your opponents cards. I would be much more interested in the results of a poll on that!
I'm not even sure what a good example of cheating would be in foosball.
Let's see....corked balls? - no that's okay (for Bonzini players anyway)