I thought Riddle of Master Lu was really pretty good, though not everyone thinks so. It had a pretty good plot, quite a bit of humor and some interesting places to visit. The puzzles were pretty good as well, they all fit and none seemed to be just a distraction to slow you down. I'd have it on my (not-so) short list of favorite adventure games. Not sure how easy it would be to find though.
[This message has been edited by Burns (edited November 11, 2000).]