MUST SEE TV: AN ALL-STAR TRIBUTE TO JAMES BURROWS -- Pictured: (l-r) Courteney Cox, Kaley Cuoco -- (Photo by: Trae Patton/NBC) Photo

From: Photo Flash: First Look - Stars Reunite for NBC's TRIBUTE TO JAMES BURROWS

The casts of several of the most iconic comedy series of all time will be participating in NBC's special MUST SEE TV: A TRIBUTE TO JAMES BURROWS, which will air Sunday, Feb. 21 from 9-11 p.m. ET/PT.