I'm a Web Developer in London.
If I could have one wish it would be that I had massive metallic arms that could crush whole cars... and to be able to sing like Enya.
It'd be so awesome I'd be all like "Sail away, sail away, sail away..." and just be obliterating citys like plastic cups.
The only problem would be if that was counted as two wishes or one.
If it was counted as two, but I was only allowed to have one I'd wish to be slightly faster at typing.