How about:
Gamertag
I could be wrong but I wouldn't be surprised if that has already been taken.
It kind of depends on your interests. Thats what I based mine off of was things I like.
So your intrested in Crazy Monkey's?
Intresting :P
Also i totally agree that numbers ruin any given name unless there creative
Actually. Thats not my gamertag anymore. It used to be along time ago. My favorite animal was monkeys and people called my gameplay style crazy so I got that name.
On Topic:
PorkOmicron
Sgt.Sulfide
HydroRiot
TombWaffle