I'd always wanted control over time. Nothing huge like traveling to the time of dinosaurs or something.
I mean temporarily stopping time (excluding for myself) or going slightly back into the past (personal undo command). I'd allow me to appear as if I'm teleporting, know the outcome of the immediate future, retry anything that went wrong and probably a load of other functions.
![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif)
Although abusing the powers would make me appear to age quickly
![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif)