British/American Spellings

[Fenris]

Basically, the annoying words that are both write depending on where you were brought up. Both these are correct (although I might argue that the American version isn't. =P But that's me being silly.)

British version is Red and the American version is Yellow

cancelled, canceled
centre, center
cheque, check
colour, color
criticise, criticize
favourite, favorite
grey, gray
harbour, harbor
humour, humor
judgement, judgment
labour, labor
licence, license
realise, realize
theatre, theater
tyre, tire
valour, valor

If you can think of any more that aren't on here, let me know.