In "The One With the Routine," Monica and Ross are psyched when Joey's girlfriend Janine invites them to a taping of Dick Clark's New Year's Rockin' Eve. When the big night arrives, they're dismayed to see the camera crew won't pan on them, so they bust out a hilarious dance number from their high school days that they dubbed "The Routine." Their ploy works, though they don't hear the crew say they're saving it for the outtakes.
What to wear: A low-cut tank top and tight pants for Monica and a simple long-sleeved tee and pants for Ross. Don't forget to also rewatch the episode and memorize the dance routine.