OK watche da quick chunk of the '04 WSOP ME today, and saw the Mattias Anderson (known to me as Pokermats, used to play regularly with him) and Ericson.
Matt had a Huge stack, don't remember how big though, but very healthy and has

, and makes a standard PF raise. Ericson has

(ok dont remember exact suits), and pushes all-in. Matt goes into the tank and eventually lays it down, then guessing Ericson had 7's, close enough. Matt "correctly" knew he was about a 53/47 dog there, but was up against a short stack.
At what % of your own stack does making this type of call become correct? When I'm looking ot eliminate a player, when should I go into the small stack coinflips knowing I'm most likley a dog?