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| "The Shower Principle" | |
|---|---|
| 30 Rock episode | |
| Episode no. | Season 6 Episode 15 |
| Directed by | Stephen Lee Davis |
| Written by | Tom Ceraulo |
| Featured music | Jeff Richmond |
| Production code | 615 |
| Original air date | March 29, 2012 |
| Guest appearances | |
| |
"The Shower Principle" is the fifteenth episode of the sixth season of the American television comedy series 30 Rock, and the 117th overall episode of the series. It was directed by Stephen Lee Davis, and written by Tom Ceraulo. The episode originally aired on NBC in the United States on March 29, 2012.
In the episode, Liz (Tina Fey) realizes that every year in her life is exactly like the last and uses this knowledge to her advantage; Jack (Alec Baldwin) searches for a business pitch that will transform Kabletown; Jenna (Jane Krakowski) deals with a theatrical curse; and Tracy (Tracy Morgan) has trouble with the IRS.