Kraken, Bitstamp, OkCoin(not .cn), Coinbase, BTC-e, Gemini, Quoine, Bitflyer, Coincircle. 1st round of drinks on you.
Kraken and Bitstamp are the ones that accept USD/EUR that I'm working with atm. Gemini isn't available outside the U.S. or is limited to only a few countries. Gatehub hasn't authorised me for USD or EUR deposits and its now been more than a week. They also don't respond to emails. Kraken verified/authorised me within 24 hours. I'm impressed with them so far.