With the return of Mad Men not happening for at least four months (they're not even in production yet), we'll take any shred of the Sterling-Cooper troupe we can get... even if it comes in the form of a drunken, out-of-tune, cast and crew sing-a-long of "Bye Bye Birdie" (a song featured last season). Sadly, as NYMag points out, Christina Hendricks and Bryan Batt don't make an appearance... which is possibly made up for by Elisabeth Moss texting in her Peggy Olson wardrobe.

Watch Ann Margaret give a better (albeit less entertaining) performance here.