Do you Remember Q-Bert?

Anyone remember that old Atari game Q-Bert? I used to love playing it as a kid. It made me wonder how one might create effective controls for a game like that for iPhone. I've got my hands full with game dev at the moment, but I think an effective Isometric control system demo would be brilliant. Any takers?
Diagonal Up Left, Diagonal Up Right, Diagonal Down Left, Diagonal Down Right.
CJM
Diagonal Up Left, Diagonal Up Right, Diagonal Down Left, Diagonal Down Right.
CJM
Comments
QS
CJM
I think a joystick would really be the best way, or you could offer Joystick and buttons on each corner like QS said