Mine is the 3rd Q of game 7 of the 2005 Finals. Few people ever mention it because it was ugly, but it stands out for me.
We were down 7 or 8 and nothing was going - everyone, including Tim, was in a hole, and the Pistons' D looked impenetrable - yet Timmy just kept hammering away on the rock until it broke and he singlehandedly lifted us back into the game on some ugly but exceedingly smart and tough play.
Went back and read the thread after posting... glad to see others remember this one too. It was EPIC. The best part was that he was having an awful time but just kept going at them.