Ever hear this riddle?

I was working on finding a riddle for a contest at work when I remembered one I heard a long time ago. I don't remember exactly how it goes or what the answer is though is the problem. I remember it's something along the lines of this:

"You walk into a room and see two doors. You know behind one door is 1 million dollars and behind the other is nothing. You are allowed to open only one door. Standing in front of each door is a man, each of whom you may ask only one question. You know however that one of the men always lies and the other always tells the truth. What question do you ask to figure out which door has the million dollars behind it?"

I apologize if I've butchered the riddle as it's been quite awhile since I originally heard it! Any help would be greatly appreciated, thank you.