Besides all the excellent seasons he had, I'll remember Berkman for being at his best in the '04 and '05 playoffs. 26 total games, 6 HR, 26 RBI. Had at least a .400 OBP and at least a .524 SLG% in each series. In the WS, I remember him being pitched around to a ridiculous extent (because of Ensberg's bum shoulder), but he still managed to hit .385/.526/.538 with 6 RBI in 4 games.
Hopefully after a few years I'll forget that he also played for the Cards and the Rangers.