time machine all the way! I would first go into the future, get anything cool, see whats goin on, then go back and see the dino's and talk to a t rex and say "why thank you, if it werent for you and your friends dying, I wouldnt be able to ride my Busa!"
Then I would spend most my time screwing with people like saying what they are about to say a second before they do so... going to casinos... becoming the battleship world champion... and all in all having fun