Loot & Queue are words I picked up in WoW. I probably heard "queue" before WoW but I definitely didn't know how to spell it. Most likely I've picked up more words but those two are the only ones that I can think of right now.
As English isn't my first language, I learnt a lot of words you don't necessarily learn during English lessons. Quite awesome really. I'm happy that I made the decision to switch to the English client version near the end of BC.