The Big Bang Theory‘s Johnny Galecki has shared a photo on Instagram of the casts of his show and Friends (most of them anyway) who got together during NBC’s tribute to veteran sitcom director James Burrows. See above.

The special, Must See TV: A Tribute to James Burrows, airs at 9 PM Sunday, February 21 on NBC. It celebrates Burrows 1,000th episode, a milestone reached with his new NBC comedy Crowded, in which he also serves as an executive producer. Joining Burrows for the celebration are the stars of several iconic comedy series that Burrows directed including Charlie Sheen and Jon Cryer from the original Two And A Half Men, along with Cheers stars Ted Danson and Shelley Long, and original casts of Friends, Frasier, Will & Grace, Taxi, The Big Bang Theory, Wings and Mike & Molly.