When “30 Rock” had its premiere in 2006 Ms. Fey was that rare thing, a female writer starring in her own prime-time network show. She has moved on to movies, starring with Paul Rudd in a new comedy, “Admission,” to be released in the spring.

She doesn’t leave television in a vacuum. Now of course Ms. Kaling has her Fox show; Lena Dunham has “Girls” on HBO; and Whitney Cummings, who created and stars in “Whitney” on NBC, also is a co-creator of the CBS comedy “2 Broke Girls.” Amy Poehler, who like Ms. Fey is a “Saturday Night Live” alumna, is one of the writers as well as the lead of “Parks and Recreation” on NBC.

Ratings were never the real measure of the reach of “30 Rock.” Those only peaked in 2008, immediately after Ms. Fey’s dead-ringer impersonation of Ms. Palin on “Saturday Night Live” stoked audience interest. Critical praise and a deluge of Emmy Awards, so many that Ms. Fey has joked about it, are a better gauge of the show’s influence. So are the celebrity cameos.

It doesn’t take much to coax politicians and television anchors to make comic cameos anymore — Brian Williams is practically a regular on “30 Rock,” and Vice President Joseph R. Biden Jr. let Ms. Poehler swoon over him on a recent episode of “Parks and Recreation.” But “30 Rock” had an even greater appeal, drawing famous people who are not particularly known for self-mockery, including Condoleezza Rice (in her cameo the former secretary of state is furious that her ex-boyfriend Jack broke up with her by text), Oprah Winfrey and the House Democratic leader, Nancy Pelosi. In the final episode Ms. Pelosi gives a mock-television interview denouncing Jack Donaghy as an “economic war criminal.”

Ms. Fey is a pioneer who resists being taken too seriously. She prefers to be revered for her irreverence. But one sign of her influence is her ability to persuade powerful, sensible women to go on “30 Rock” and make fools of themselves.