Ok so im going to change my name and was just wondering if i could get some input however i dont want it to be like Xxitz quickscopexX just random names you might think would be interesting or funny.
Whatever it is, it should really be self-descriptive. Mine has a long story behind it. Suffice it to say it's a yin/yang thing.
Obscure references to other games/movies you like can be good too. Arseface was the name I chose in Fable and the name stuck so well I kept it. It's also a personal critique on my appearance. Anything that has multiple meanings is good. The more ways you can spin the name around the better. If you like Saving Private Ryan, you might want to go with something like Pvt. Privates(heh). Or take a random line from the movie and twist it in a humorous way. Or non-humorous, but that's just less fun.
Amirite "Hey Chicken Chaser! Chased any chickens recent-" DECAPITATION. Have you read the "Preacher" comics, perchance? I'm not the one to talk about GamerTag choice - mine does have tasty sibilance - but do what Arseface said.