I'd have the golden cinema ticket from the last action hero. I'd be able to literally step into any piece of fiction ever.
I need to travel, see a holiday on tv, i go through the tv to the holiday
I want to talk to optimus prime, i go through the tv and sit down and have a chat with him
I want some martial arts lessons, i go see batman in the batcave.
I get to flirt with harley quin, marylin monroe and all the classic beauties
I get to drive bond cars, blow up the death star, watch king kong fall inches from my feet, run with dinosaurs, aliens, learn ki techniques, go webslinging with spidey, experience what it's like to go at warp speed, talk with picard, play chess with magneto
I get to explore strange new worlds every day of the week and lose myself in fiction,
BUT MOST IMPORTANTLY, i get to go into pornos and bang all the stars at any time i see fit.
I'm sorry but that's far more impressive than having any power.