I was thinking about some of the puzzles in the IE games that seems to work for me and some that were an absolute chore. I really enjoyed the puzzles in the Baldurs Gate series. The ones I didn't enjoy was the Fellwood in IWD2. While the Fellwood does sound kind of cool in a pnp game, it didn't translate well in the finished game.
What puzzles did you enjoy in the IE games or just crpgs in general? And what puzzles didn't you like?