There's a caveat or two with which I submit this list of our favorite con artists on film, to correspond with tomorrow's NY/LA bow of The Brothers Bloom (our review from Toronto is here; our interview with director Rian Johnson, there).
One: I have not seen the following -- David Mamet's House of Games, David Mamet's The Spanish Prisoner, and
Two: I've seen but don't fully recollect either The Grifters or Nine Queens enough to feel comfortable including them as if I had (I also missed the English-language remake of the latter, Criminal, though I've been told that's for the best). If I were a slier man, then maybe I could fittingly deceive the lot of you, but I'm not, so I won't.
While I don't doubt that the characters in those films would be worthy of a slot on our list, there are still at least seven other con (wo)men in the movies worth shining the spotlight on, and I do hope that you do think that may make do when all's said and done.