NBC has released a promo for its tribute to director James Burrows that offers the first real look at the "Friends" reunion.

Although “The Big Bang Theory” star Johnny Galecki unveiled a photo last week showing David Schwimmer, Matt LeBlanc, Jennifer Aniston, Courteney Cox and Lisa Kudrow, this TV spot shows actual footage from the special. (Matthew Perry is in London rehearsing for a play.)

In the snippet, "Watch What Happens Live" host Andy Cohen asks the assembled "Friends" alums, “Did you all sign contracts saying you wouldn’t sleep with each other?” Kudrow frantically responds, "David, say something!"

The promo also showcases actors from "Cheers," "Taxi," "Frasier," "Mike & Molly," "Will & Grace" and "The Big Bang Theory" -- all series for which Burrows has directed episodes.

"Must See TV: An All-Star Tribute to James Burrows" will air Sunday, Feb. 21, at 9 p.m. ET/PT on NBC.