The episode will be performed twice, once for the East Coast and once for the West Coast. No details on its plot have been released.
Jackson is known for his Broadway appearances in Finian's Rainbow, Xanadu and All Shook Up, among others. He has appeared Off-Broadway in Altar Boyz and The Agony and The Agony, and at City Center in Finian's Rainbow and Damn Yankees. He is currently playing a recurring role on "Glee" and has appeared in the film "United 93."
"30 Rock," the sitcom showing what it's like behind the scenes of a "Saturday Night Live"-esque sketch-comedy show, stars Tina Fey and stage regulars Alec Baldwin, Jane Krakowski, Tracy Morgan and Jack MacBrayer. It airs Thursdays at 8:30 PM ET on NBC.