Jessica Pare

Mad Men's Season 5 premiere featured one scene everybody's talking about.

Mad Men creator on Season 5 premiere: Megan has power over Don

During a surprise 40th birthday party for Don (Jon Hamm), his new bride Megan (Jessica Pare) treated him to a sultry rendition of "Zou Bisou Bisou." A digital download of Pare's version of the song, which was originally recorded by British actress and pop star Gillian Hills, is now available on iTunes and a limited edition vinyl is available on AMCtv.com.

To help us get the catchy tune out of our heads, we asked the cast to tell us what songs they might break into after a few too many Old Fashioneds.

Jon Hamm (Don Draper)
: "I don't know. I am much like Don in the sense [that] I don't really want to get on a table and do anything like that. I don't need to be the center of attention. And I can't sing anymore. My voice is so shot.

Mad Men Season 5: It's every man for himself

Jared Harris (Lane Pryce): "I wouldn't do the little dance moves, but I love karaoke. In fact, [recently] I was down at Fontana's doing live-band punk rock heavy metal karaoke. It was St. Patrick's Day, so I did 'Whiskey in the Jar.' My go-to would be 'Delilah' or 'Thunder Road' or 'Life on Mars' or 'Fat-Bottom Girls.'

John Slattery (Roger Sterling): "Oh my God, the couple of times I've done karaoke I've woken up wincing, thinking, "Did I really do that? What song did I do?" Maybe something by The Clash, I think. Maybe a country song. What would be easiest to do, Roy Orbison?"

Vincent Kartheiser (Pete Campbell):  "I don't really do karaoke, but when I do, it's always Harry Belafonte. I can do any of [his songs]. I can't do them a quarter as well as the vocals of that man, of course. But any of his Caribbean songs I think you can get away with wailing a little bit and people enjoy the background music enough to allow you to survive."

January Jones (Betty Francis): "I'd try 'Zou Bisou Bisou.' I thought it was fantastic. But no, you'll never see that from me. I cannot sing or dance, not even in a cute, funny way."

Matthew Weiner (creator/executive producer): "'I Touch Myself' by The Divinyls. There would be a lot of drinks, but that's my karaoke choice, always."