I'm going with Treasure.
They even make kick-ass licensed games.
They made one of the best games ever (not just of licensed games, but in all of Gaming) out of Astro Boy...
Astro Boy: Omega Factor
They made a kick-ass game out of Bleach...
Bleach: The Blade of Fate
And the amazing pedigree goes on...
Sin and Punishment, Radiant Silvergun, Ikaruga, Gunstar Heroes, Guardian Heroes, and Bangai-O Spirits, Wario World...
http://en.wikipedia.org/wiki/Treasure_%28company%29#Games_developed_by_Treasure
Always intense, always fun, always fantastic.