Temple of Elemental Evil, at the moment. My party just hit level 5, and I'm very satisfied with their performance. My dwarven cleric just got his hands on a Staff of Striking and a +1 breastplate, and he's pretty much the combat machine of the group now. He does at least 10 points of damage with each hit, it seems, and he doesn't get hit very often. He also has the largest hit point total in the group, so that helps. Aside from that, I've got me a half-orc monk, a human ranger/rogue, a half-elf bard, and a halfling conjurer. It's a pretty good group, all things considered. I realized recently that I didn't have anyone in the group who could pick locks, though (damn locked chests), so I spent some XP on some scrolls of Knock. Good game, if flawed somewhat.