My wishlist:
1) Adopt a dinosaur as a pet. Possibly a raptor.
2) Shake the hand of Elvis... on stage. With my space/timeship zapping in right in the middle of his show.
3) Pull a prank on H.P. Lovecraft, by having a score of men dress up in fakey tentacle costumes. Then, in the middle of the night, in the dark, we swarm him and freak him out.
4) Make sure to "tap into" the line of Alexander Graham Bell's first telephone. I would thusforth set the record as the world's first crank call.
5) I would meet Albert Einstein, tell him I'm from the future, and then hand him a comb, before mysteriously zapping out. Then I look at future photos to see if he got the hint. (Not that I think that wild hair is bad, but I do like messing with people).
6) I would visit Medieval France, bringing a little TV. I'd make sure to get an audience with the King of France, and then show him that little part from "Monty Python and the Quest for the Holy Grail"... you know, that scene with the Frenchman. I would have a back-up plan involving running like hell, and getting to my time machine.
Phew. That's it for now!