Disney's Kim Possible on GBA was way better than it had any right to be. You start off doing backflips over lasers and swinging from pipes like some kind of teen spy ninja—and the animation's actually smooth for a handheld game. The boss fights feel huge, like when you're dodging missiles from some ridiculous mech suit in a shopping mall. Honestly, I expected a cheap licensed game, but the platforming's tight and the gadgets (grappling hook, smoke pellets) make you feel properly sneaky. Still holds up if you can find a copy.