what are some of its cast and characters?
Cast includes TIna Fey, Alec Baldwin, Tracy Morgan, and Jane Krakowski, among others.
30 Rock
The series stars Fey with a supporting cast that includes Alec Baldwin, Tracy Morgan, Jane Krakowski, Jack McBrayer, Scott Adsit, Judah Friedlander, Katrina Bowden, Keith Powell, Lonny Ross, John Lutz, Kevin Brown, Grizz Chapman, and Maulik Pancholy.

what is when it rains, it pours (30 rock)? It is an episode of the  fifth season of the American television comedy series "30 Rock". when did the conception of this series started? 2002 how many seasons does it have? Seven seasons what are its ratings? It tied at 11th in affluence with several other shows.
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30 Rock [SEP] Introduction
A critic for "The A.V. Club" once remarked that it "usually adopts the manic pacing of a live-action cartoon." The show was influential in its extensive use of cutaways: sudden, short cuts to unrelated scenes showing something the characters are briefly discussing. "30 Rock" also became known for its dedication to making sets extremely elaborate, once showing a set that took three days to build for only six seconds of video.