Question: What one of special kicked off the sixth season of Robot Chicken?

Context articles: Robot Chicken: Star Wars Episode III
Robot Chicken: Star Wars Episode II
Seth Green
Robot Chicken: Star Wars
Robot Chicken
Robot Chicken DC Comics Special
List of Robot Chicken episodes
Doug Goldstein
Robot Chicken (season 6)
Robot Chicken (season 5)

Robot Chicken: Star Wars Episode III (also known as Robot Chicken: Star Wars III) is a 2010 episode special of the television comedy series "Robot Chicken", and the third and final installment in the Annie Award-winning and Emmy-nominated "" trilogy.
 It premiered on Cartoon Network's Adult Swim programming block on December 19, 2010.
 The special is 45 minutes long, as opposed to the usual 11-minute "Robot Chicken" runtime and the 21-minute runtime of the two previous Star Wars specials.
 It was the final "Robot Chicken: Star Wars" special.
Robot Chicken: Star Wars Episode II is a 2008 episode of the television comedy series "Robot Chicken", and the sequel to the Annie Award winning "", which aired as a one-off special during Cartoon Network's Adult Swim block on November 16, 2008.
 Like "" it has been released on its own DVD, on July 21, 2009, and will not be part of a season box set.
 The DVD contains the original broadcast version, and the "Extended Version", which features an additional 15 minutes of footage cut from the broadcast version.
 It was nominated for a 2009 Primetime Emmy Award for Outstanding Animated Program (for Programming Less Than One Hour).
Seth Benjamin Green (born Seth Benjamin Gesshel-Green; February 8, 1974) is an American actor, voice artist, comedian, producer, writer, and director.
 Green is the creator, executive producer, writer, director and is the most-frequent voice on Adult Swim's "Robot Chicken".
 He directed many of the "Robot Chicken" specials including "" and "DC Comics Special".
 His feature films include "Airborne", "The Italian Job", "Party Monster", "Can't Hardly Wait", "Without a Paddle" and the "Austin Powers" series.
 Green is also known for his role as Chris Griffin on Fox's "Family Guy" and previously as Daniel "Oz" Osbourne in "Buffy the Vampire Slayer", and "Greg the Bunny".
 He voices Lieutenant Gibbs in "Titan Maximum" and Jeff "Joker" Moreau in the "Mass Effect" video game series.
 Green has appeared in movies such as "Rat Race", "America's Sweethearts", "Old Dogs", as a child in Woody Allen's "Radio Days", and in the horror films "Idle Hands" and "Stephen King's It".
"Robot Chicken: Star Wars" (also known as "Robot Chicken: Star Wars Episode I") is a 2007 episode of the television comedy series "Robot Chicken", airing as a one-off special during Cartoon Network's Adult Swim block on June 17, 2007.
 It was released on DVD on July 22, 2008.
Robot Chicken is an American stop motion sketch comedy television series, created and executive produced for Adult Swim by Seth Green and Matthew Senreich along with co-head writers Douglas Goldstein and Tom Root.
 The writers, especially Green, also provide many of the voices.
 Senreich, Goldstein, and Root were formerly writers for the popular action figure hobbyist magazine "ToyFare".
 "Robot Chicken" has won an Annie Award and five Emmy Awards.
Robot Chicken DC Comics Special is an episode of the television comedy series "Robot Chicken" and it was aired as a one-off special during Cartoon Network's Adult Swim on September 9, 2012.
This is a list of episodes for the stop-motion television series "Robot Chicken".
 The first episode of "Robot Chicken" aired on February 20, 2005 at 11:30 PM EST on Adult Swim and the first season finished on July 18, 2005.
 The second season began on April 2, 2006 and ended on November 19, 2006.
 The show's third season premiered on August 12, 2007 and ended on October 5, 2008.
 The fourth season premiered on December 7, 2008 and ended on December 6, 2009.
 The series was put on hiatus after the fourth-season finale on December 6, 2009, and resumed with the fifth season on December 12, 2010, which ended on January 15, 2012.
 The sixth season premiered on September 16, 2012 and included a half-hour special based on DC Comics.
Douglas "Doug" Goldstein (born September 12, 1971) is an American screenwriter and television producer and director, primarily known for his work as co-head writer on the late-night animated series "Robot Chicken".
 He won two Emmy Awards for episodes of "Robot Chicken" and has won one Annie Award for "".
The sixth season of the stop-motion television series "Robot Chicken" originally aired in the United States on Cartoon Network's late night programming block, Adult Swim.
 Season six officially began on September 9, 2012, on Adult Swim, with "Robot Chicken DC Comics Special" and will contain a total of twenty episodes.
 The first of the regular Season 6 episodes aired on September 16, 2012.
The fifth season of the stop-motion television series "Robot Chicken" originally aired in the United States on Cartoon Network's late night programming block, Adult Swim.
 Season five officially began on December 12, 2010, on Adult Swim, with "Robot Chicken's DP Christmas Special", and contained a total of twenty episodes.