Well, as for me,
Boggy Creek II would be the obvious taker of first–place prize.
Overdrawn at the Memory Bank,
Quest of the Delta Knights, and
Deathstalker are also in the top five. Oh, and
Manos.
Curiously, though most of those are Mike and Bill episodes, I liked Joel and Trace better overall. Not to say that I didn't like Mike and Bill, of course.
Mostly I liked Kevin's Tom Servo more than Josh's — but not to say that one performance was better than the other. Actually, Josh hit quite a few good characteristics that Kevin omitted.
What do you think?