WATCH: Casts of 'Will & Grace' and 'Friends' Reunited

The trailer for NBC's Must See TV: An All-Star Tribute to James Burrows features stars from some of television's greatest sitcoms from the past 30 years—from Taxi to Cheers, Friends and Will & Grace.

Related | Will & Grace Cast To Reunite For NBC Special!

While not everyone could make it to the taping,  they clearly missed out on all the fun, including host Andy Cohen asking the Friends cast if they signed contracts that they wouldn't sleep together. Cue some classic Kudrow, and Burrows isn't even behind the camera.

Check out the promo below:

Must See TV: An All-Star Tribute to James Burrows airs Sunday, February 21 at 9/8c on NBC.

WATCH: Casts of Will & Grace and Friends Reunited

WATCH: Casts of Will & Grace and Friends Reunited