I've always thought, if I could have a super power, that super-speed would be pretty great. I just think I'd get a lot done, plus the opportunities for messing with people are huge. We discussed this at a recent dinner with friends, because I have awesome friends, and we bounced back and forth different ideas of what you could do with such power if, say, someone was giving a speech. With a couple of props, you could make it look like they were trying to avoid giving the speech at all by performing a bunch of magic tricks. Imagine putting ping-pong balls in their mouth any time it opens up, releasing doves from their sleeves every time they gesture widely, then replacing them with a monkey in a critical moment. Hilarious.
Of course, this assumes that the force and speed don't disintegrate anything, create sonic shock waves or superheat the air, which is a real danger with super-speed and not at all fun. It has to be a weird kind of magical, non-destructive speed power. Quicksilver, in X-Men: Days of Future Past, holds Magneto's head so he doesn't get whiplash, then runs at a speed that would disintegrate a human body anyway. You want to avoid that, if you're super-speeding about. Just a tip.
Mokalus of Borg
PS - I'd probably get a lot of reading done.
PPS - Then I'd probably get super-bored, to be honest.