If you had three wishes, but could only use them to change your perception of the world, what would you wish for? Personally, I've always wondered what it would be like to see ultraviolet and infrared, so I'd wish to see a bit beyond the human-visible EM spectrum. I also think it would be cool to sense magnetic fields. As for a third wish, I'm stumped.
Mokalus of Borg
PS - That is, unless super reflexes counts as a perception difference.
PPS - I'm pretty sure it doesn't.