Telekinesis and shockwaves.
-edit-
I was in a hurry when I posted, and I feel like elaborating a bit.
I would like to be able to have high-level telekinetic powers, and the ability to create force fields. These powers would be very versatile, seeing as I could generate force fields shaped as weapons, and also use them to shield myself from things like blows and bullets. I would also be able to rotate sharp objects very fast with my telekinetic powers, and move them freely through the air, I could also just generate a rotating, razor-sharp force field and cut things with that if I wanted. On top of that, I could strengthen my physical abilities by using my telekinetic powers to move my arms and legs in addition to my muscles. I would also be able to fly, or atleast hover above the ground. Shockwaves would also be possible to create with these powers, so it's kinda redundant to mention that.
However, there would ofcourse be limitations. My telekinetic abilities would ofcourse become less precise and powerful if the target was far away from me, and I wouldn't be able to use them through walls, windows or other obstacles without there being a way around them, or destroying them.
It'd be like Jean Grey, just with less phychic abilities, and more telekinetic power.
I would mostly use my powers for personal gain, and probably not for evil. I wouldn't have a catchphrase, because things like that suck. I would probably not have a superhero costume, because I wouldn't bust badguys all that often, just now and then.