The cast of "Friends" and "The Big Bang Theory" posed for an epic photo that has gone viral on Instagram.

Actor Johnny Galecki shared the photo which was taken during NBC's tribute to veteran sitcom director James Burrows, whose credits include some of TV's most successful shows including "Two and A Half Men," "Cheers," "Frasier," "Will & Grace," "Wings," "Mike and Molly," "Friends" and "The Big Bang Theory."

Stars from those shows were also in attendance.

Absent from the "Friends" cast is Matthew Perry, who is currently starring in the play "The End of Longing" in the U.K.

The special, "Must See TV: A Tribute to James Burrows" celebrates Burrows 1,000th episode.

 

 

And then this happened. #TBBT #friends

A photo posted by Johnny Galecki (@sanctionedjohnnygalecki) on