Just a few factoids to get you excited for Sunday's season finale.
"Mad Men" was originally pitched to HBO — and they turned it down.
Bet they wish they hadn't.
Glen is played by Matthew Weiner's real-life son.
He's not quite as creepy now that you know he's the son of the show's creator, is he? And yes, it's Glen with one N.
7 out of 9 writers on the show are women.
Take that, sexism of the Mad Men era!
Jon Hamm could have become famous for playing Jack Donaghy instead.
Can you imagine Mad Men without Jon Hamm? Or 30 Rock without Alec Baldwin? In 2009, Hamm told Entertainment Weekly that "I actually auditioned for the role of Jack Donaghy. ... It was way early in the process. So somewhere on tape, there exists me talking about three kinds of heat."