I'd play music from the skies.
Build a theme park for me and the friends that opens at 9pm and runs till 4am.
Plug my guitar into the sky amp and rock out on a mountain. Just cos.
Candle lit dinner with significant other in the earths outer atmosphere, preferably when there's a small meteor rain, so we can see it all burn up as it hits the earths atmosphere.
Have a massive car garage with every type of super car and a few favourites, the roads have noone on them so I can drive any way I like.
Make love for 10 hours straight, stopping only to refill my glass of scotch and light another cigar
Me and my friends would all be jedi.
I'd finish something I started.
Death wouldn't be the end, just the beginning.
I could turn anyones difficult situation (cancer, debt) into a game in which I enter, and can defeat - and get paid for it.
Low gravity (with gravity controls for when friction is required)
I'd stop here before I take up too much page.
Instead of saying "Weekend coming up! excited!" people would say "Week coming up! excited!"
I'd be able to split into two separate entities; the 'good' me, and the 'bad' me, for dramatic effect.