I share a cubicle at work with someone who is really rude and that I cannot stand.?

This person is self-absorbed and put's down anyone that has a differing opinion. They also talk-nonstop about themselves and make it hard to be productive. I try to ignore this person by wearing headphones, but they still bang their fist on my desk every time they walk past or stare at me until I ask them what they want. If I ask my boss if I can move to another cubicle, I'm sure it would cause problems because we have to work together sometimes and the reason for my move would probably be obvious (besides I have only worked there 6 months) I'm not even sure they would let me move cubicles anyways. I dread going to work now because I have to spend at least 8 hours a day sitting next to someone that makes my skin crawl and who is mean to me. Any suggestions?