I loved that show. I stopped watching regularly after about Season 8 (I own Seasons 2 - 6 on DVD but haven't watched them in a while). People that have never seen it don't realize how smart some of the humor was or how easy it was to miss some references or gags.

Here's a list of the 150 best episodes. Way too many, I skipped down to the top 20. Remember all but one of the top 20 episodes very well.