Katamari Damacy is just a bit odd when it comes to controls. Both in the sense that it requires both thumbsticks (tank control), and that it only requires both thumbsticks. (The Look button and Select Stuff buttons are just extras.)

I'm not sure, but I suspect the PS2 and XBox actually have the most buttons for consoles. (Twelve buttons. PS2: four right-thumb buttons, four shoulder buttons, two thumbstick buttons, and the Start/Select pair. XBox: four right-thumb buttons, two shoulder "trigger" buttons, two thumbstick buttons, two Black/White buttons, and the Start/Select pair. Add in one extra each if you count the D-Pad.)

I love playing Katamari Damacy, if only for the sense of "what did I just pick up?" (And the music. Can't forget the music.)