100 (30 Rock)

"100" is a double episode of the American television comedy series 30 Rock, comprising the 20th and 21st episodes of the fifth season, and the 100th and 101st episodes overall of the series. It was written by Jack Burditt and the show's executive producers Robert Carlock and Tina Fey, who is also the series' creator, head writer, and star. The episode originally aired on NBC in the United States on April 21, 2011. Commemorating the 100th episode of the series, this episode was one hour long and included a multitude of guest stars including Michael Keaton, Tom Hanks, Rachel Dratch, Will Forte, Brian Williams, among others.

In the episode, Liz Lemon (Tina Fey) faces news of cancellation for TGS from Hank Hooper after the departure of Tracy Jordan (Tracy Morgan) brought in terrible ratings. Jack Donaghy (Alec Baldwin) promises Hank the return of Tracy and asks for one more chance for TGS to prove itself with its 100th episode. Meanwhile, a gas leak in the building leads to hallucinations among the characters, such as Jack's imaginings of alternate versions of himself visiting him. In a subplot, Jenna Maroney (Jane Krakowski) considers becoming a mother following a joke she made to Kenneth Parcell (Jack McBrayer) five years earlier.