Watch the Cast and Crew of Mad Men Sing ‘Bye Bye Birdie’ [VIDEO]

Watch the cast and crew of Mad Men have fun behind-the-scenes in this endearing video! Mad Men's series finale airs Sunday night on AMC. I don't really know how to handle the loss of my favorite television series of all time, so I have spent an unreasonable amount of time binge-watching the show on Netflix and seeing what Mad Men related clips I can dredge up on YouTube.

That's where I found this gem: it's a video produced for series creator Matthew Weiner. The video was shot during the third season which (spoilers ahead!) featured a pitch for Patio, Pepsi's new diet soda, based on Ann Margaret's iconic "Bye Bye Birdie" performance. You can see the cast and crew goofing off as they lip sync along to the musical number, and if you wait until the end you'll catch some great bloopers, too.

MORE SPOILERS: I wonder if the woman who holds up the sign is the lady who pops out of the cake at the American Legion party Don attends in Oklahoma in "The Milk and Honey Route." Check out the 1:21 mark; I'd be willing to bet I'm right. Also: how hard is it to hear "Bye Bye Birdie" after that episode?