!what! yup you can get personalised number plates in other countries, why wouldn't you be able to? i don't know if they are really popular in the states but in the UK you don't see them every day. When you do see them they're usually on cars owned by yuppies! all they do is draw attention to yourself and your car, celebrities don't tend to have them on their cars because it draws too much attention to themselves.
I live in Northern Ireland, and I have to say, I see personalised plates ALL the time, loads and loads of times every day. Some are just the basic plates costing a couple quid extra to get a shorter one, while others go all out. One guy has a Roller with 'Uzi' as the plate. Don't like the car all that much though...
andy.