Sounds like Smash TV for D&D characters. Coincidentally, I run a game like that at conventions I go to...
...well, to be perfectly honest, I got annoyed at how difficult it was to create different characters with different play styles, and so I wound up creating my own system. Which still vaguely resembles its d20 System roots.
(On a separate and amusing note: the RPGA has tried twice, unsuccessfully, to have my game banned from Anime Expo. It's all kinds of fun getting around their outlandish rules and requirements -- first they were upset that I was running a v.3.5 game after the launch of 4e, and they tried to "bribe" me with a 4e Player's Handbook -- then they complained that PvP elements were contrary to the purpose of D&D. Keep in mind that they never came directly to me, and went over my head to get my game banned instead. Jerks.)