Question: "Verna" is the twelfth episode of the fourth season of the American television comedy series "30 Rock", and the 70th overall episode of the series, which former SNL cast member guest stars as the title character of this episode, an American actress and comedian best known for her work on "Saturday Night Live", where she was a repertory player from 1986–91?

Context articles: Argus (30 Rock)
I Do Do
Jan Hooks
List of Saturday Night Live episodes
Ellen Cleghorne
Verna (30 Rock)
Hogcock!
Live from Studio 6H
Yvonne Hudson
Khonani

"Argus" is the nineteenth episode of the fourth season of the American television comedy series "30 Rock", and the 77th overall episode of the series.
 It was written by "30 Rock" producers Dylan Morgan, Paula Pell, and Josh Siegal.
 The episode was directed by co-executive producer and show composer Jeff Richmond.
 It originally aired on the National Broadcasting Company (NBC) network in the United States on April 29, 2010.
 Guest stars in this episode include Will Forte, Marceline Hugot, and Burke Moses.
"I Do I Do" is the and season finale of the fourth season of the American television comedy series "30 Rock", and the 80th overall episode of the series.
 It was directed by series producer Don Scardino, and written by series creator, executive producer and lead actress Tina Fey.
 The episode originally aired on the National Broadcasting Company (NBC) network in the United States on May 20, 2010.
 Guest stars in this episode include Elizabeth Banks, Craig Castaldo, Matt Damon, Will Forte, Susan Heyward, Kristin McGee, Julianne Moore, Paula Pell, Michael Sheen, and Jason Sudeikis.
Janet Vivian "Jan" Hooks (April 23, 1957 – October 9, 2014) was an American actress and comedian best known for her work on "Saturday Night Live", where she was a repertory player from 1986–91, and continued making cameo appearances until 1994.
 Her subsequent work included a regular role on the final two seasons of "Designing Women", a recurring role on "3rd Rock from the Sun" and a number of other roles in film and television.
<section begin=head />"Saturday Night Live" ("SNL") is a late-night sketch comedy and variety show created by Lorne Michaels.
 It premiered on NBC, a terrestrial television network, on October 11, 1975 under the title "NBC's Saturday Night".
 The show often satirizes contemporary American popular culture and politics.
 "Saturday Night Live" features a two-tiered cast: the repertory members, also known as the "Not Ready for Prime-Time Players," and newer cast members, known as "Featured Players."
 Each week, the show features a host, often a well-known celebrity, who delivers an opening monologue and performs in sketches with the cast.
 A musical guest is also invited to perform several sets (usually two, and occasionally more).
 Every so often a host or musical guest will fill both roles, such as was the case with Britney Spears in 2000 and 2002, Jennifer Lopez in 2001 and 2010, Justin Timberlake in 2003, 2006 and 2013, Taylor Swift in 2009, Bruno Mars in 2012, Lady Gaga in 2013, Miley Cyrus in 2013 and 2015, Drake in 2014 and 2016, Blake Shelton in 2015, and Ariana Grande in 2016.
 With the exception of Season 7 and several other rare cases, the show has begun with a cold open that ends with someone breaking character and proclaiming "Live from New York, it's Saturday Night!
"
Ellen Cleghorne (born November 29, 1965) is an American actress and comedian, best known as a cast member of "Saturday Night Live" from 1991 to 1995.
 Cleghorne was the sketch comedy show's second African-American female repertory cast member, succeeding Danitra Vance in its eleventh season, and the first African-American female cast member to stay for more than one season.
 She returned for its 40th anniversary special on February 15, 2015.
 Cleghorne was ranked the 69th greatest "Saturday Night Live" cast member by "Rolling Stone" magazine.
"Verna" is the twelfth episode of the fourth season of the American television comedy series "30 Rock", and the 70th overall episode of the series.
 The episode was written by co-executive producer Ron Weiner and directed by series producer Don Scardino.
 It originally aired on the National Broadcasting Company (NBC) network in the United States on February 4, 2010.
 Former SNL cast member Jan Hooks guest stars as the title character of this episode.
"Hogcock!"
 is the twelfth episode of the seventh season of the American television comedy series "30 Rock", the 137th overall episode, and the first part of the one-hour series finale.
 It was directed by Beth McCarthy-Miller and written by Jack Burditt and Robert Carlock.
 The episode originally aired as an hour-long episode, along with "Last Lunch", on the National Broadcasting Company (NBC) network in the United States on January 31, 2013.
 Guest stars in this episode include James Marsden, Julianne Moore and Salma Hayek.
"Live from Studio 6H" is the of the sixth season of the American television comedy series "30 Rock", and the 122nd episode overall.
 It features a return to live broadcasting from the season five episode "Live Show", both of which were directed by Beth McCarthy-Miller, and co-written by series creator Tina Fey.
 The episode originally aired live on the NBC television network in the United States on April 26, 2012, with separate tapings for the East Coast and West Coast audiences.
 "Live from Studio 6H" featured guest appearances by comedian Amy Poehler, musician Paul McCartney, and several actors associated with "30 Rock" and "Saturday Night Live".
Yvonne Hudson (born July 9, 1954) is an American television actress who is best known for being the first African-American female cast member on "Saturday Night Live".
 She joined the cast as a featured player in the show's 1980-1981 season.
 (The first black female repertory player was Danitra Vance.)
 She is also the third African-American to become an "SNL" cast member following Garrett Morris and Eddie Murphy.
 (Murphy joined one week before her.)
 Hudson first appeared on the show in 1978 as an uncredited extra in many episodes.
"Khonani" is the eighteenth episode of the fourth season of the American television comedy series "30 Rock", and the 76th overall episode of the series.
 It was written by co-producer Vali Chandrasekaran and directed by Beth McCarthy Miller.
 It originally aired on the National Broadcasting Company (NBC) network in the United States on April 22, 2010, following shortly after the episode "Lee Marvin vs. Derek Jeter" on the same night.
 Guest stars in this episode include Kapil Bawa and Subhas Ramsaywack.