Teleporting! For instance, I just had a super hot conversation and picture exchange with my guy on the other side of the world, and I REALLY would have loved to be able to teleport to where he is and screw his brains out.
Also, think of it--You could sleep in in the mornings, because you wouldn't have to worry about time spent commuting to work or school. You'd never be late for any appointment. You could travel without going through the tedious part of actually getting to the destination. If someone you knew was in trouble, you could get to them, immediately. In fact, let's say you worked with the police--you could save so many lives and catch so many criminals if you could teleport.
Ever watch the show Heroes? It was only good for one season, but it was fun to play the, "which superpower would you choose if you could?" with your friends while watching that show.