He seems to have gone through a lot of changes over the years, so which game did you feel had the best Eggman and which one had the worst?
Personally, my favorite Eggman would probably be in Riders. Yeah, I know, "Shocker", but hey, the dude won. He probably could have been more involved, but if sitting back and letting others do the work works for him, then by all means, let others do the work. In fact, I think I like him better that way, instead of just sending a bunch of robots at Sonic.
Least favorite is in 06. No, not for the stupid model, because of his voice. That scene where he sends Team Sonic through time just...It's not pleasant. I can't even describe it, maybe it's the tone, maybe it's the lines, I don't know.
Non-Honorable Mention, Colors and Generations. Hey, guys, about beating Sonic, *Points to Riders*. Start working on de-aging machines, you're losing your memories to old age.