Ok... here's something to puzzle - I appeared, on camera, for BBC2's "Liar" in September 2002. Now, I was an audience member, asking a question - not a contestant - but I stood to win 50 pounds if I along with the audience had not eliminated the one truth teller earlier in the game (I'm still wincing, Brig).
Does this count as an "appearance"?
Curious in Canada,
Ryan.