Games for an Evil Genius

After watching Joss Whedon's Dr. Horrible's Sing-a-long Blog. This is a fun video about the lighter side (with singing) of being an evil genius.

At origins I played some evil genius game, but I don't remember what it was. If possible, I'd like to find 5 other games with a genius theme. Either player's play an evil genius, fight an evil genius, or have some related genius theme.