Question: How many episodes are there in this season of the American animated television series that had the episode "Peeps?"
Context: "Peeps" is the fourth episode of second season in "Regular Show" for originally aired on January 17, 2011 for Cartoon Network.  This episode about when Benson tries to force off on Mordecai and Rigby for being slacking due their work.  He tries to plan to use a security cameras on them for slacking. The fourth season of the American animated television series "SpongeBob SquarePants", created by former marine biologist and animator Stephen Hillenburg, aired on Nickelodeon from May 6, 2005 to July 24, 2007, and contained 20 episodes, beginning with the episodes "Fear of a Krabby Patty" and "Shell of a Man".  The series chronicles the exploits and adventures of the title character and his various friends in the fictional underwater city of Bikini Bottom.  The season was executive produced by series creator Hillenburg, while writer Paul Tibbitt acted as the supervising/co-executive producer and showrunner.  The show underwent a hiatus on television as Hillenburg halted the production in 2002 to work on the film adaptation of the series, "The SpongeBob SquarePants Movie".  Once the film was finalized and the previous season had completed broadcast on television, Hillenburg wanted to end the show, but the success of the series led to more episodes, so Tibbitt took over Hillenburg's position as showrunner and began working on a fourth season for broadcast in 2005.  Hillenburg remained with the show, but in a smaller advisory role in which he reviewed each episode and offered suggestions to the show's production crew. "The Itchy & Scratchy & Poochie Show" is the fourteenth episode in the eighth season of the American animated television series "The Simpsons".  It originally aired on the Fox network in the United States on February 9, 1997.  In the episode, "The Itchy & Scratchy Show" attempts to regain viewers by introducing a new character named Poochie, whose voice is provided by Homer.  The episode is largely self-referential and satirizes the world of television production, fans of "The Simpsons", and the series itself.  It was written by David X. Cohen and directed by Steven Dean Moore.  Alex Rocco is a credited guest voice as Roger Meyers, Jr. for the third and final time (having previously provided the character's voice in "Itchy & Scratchy & Marge" and "The Day the Violence Died"); Phil Hartman also guest stars as Troy McClure.  Poochie would become a minor recurring character and Comic Book Guy's catchphrase, "Worst episode ever", is introduced in this episode.  With "The Itchy & Scratchy & Poochie Show", the show's 167th episode, "The Simpsons" surpassed "The Flintstones" in the number of episodes produced for a prime-time animated series. The second season of American animated television series "Regular Show" originally aired on Cartoon Network in the United States.  The season was 28 episodes long, starting with "Ello Gov'nor", and ending with the season finale "Karaoke Video".  The season was storyboarded and written by Sean Szeles, Shion Takeuchi, Benton Connor, Calvin Wong, Paul Scarlata, Kat Morris, J.G. Quintel, Mike Roth, John Infantino, Minty Lewis, Henry Yu, and Dennis Messmer, while being produced by Cartoon Network Studios. The Beatles is an American animated television series featuring representations of the popular English rock band of the same name.  It ran from 1965 to 1969 on ABC in the U.S. (only 1965 to 1967 was first run; later transmissions were reruns).  The series debuted on September 25, 1965 and ended on September 7, 1969.  A total of 39 episodes were produced.  The series was shown on Saturday mornings at 10:30 AM EST until the 1967 third season when it was moved to 12:00 PM EST.  For the fourth season, which consisted of reruns, the series was shown at 9:30 AM EST on Sunday mornings.  Each episode has a name of a Beatles song, so the story is based on its lyrics and it is also played at some time in the episode.  The original series was rebroadcast in syndication by MTV in 1986 and 1987 and on the Disney Channel beginning in 1989 on Fridays at 5 PM.  The series was a historical milestone as the first weekly television series to feature animated versions of real, living people. Steven DePaul is an American television director and producer.  He has directed multiple episodes of Shades of Blue, NCIS-LA, CSI-NY, GRIMM, The Unit, Bones, as well as many episodes of one-hour dramatic television (updated list IMDB).  He was a longstanding producer and director on "NYPD Blue".  In his capacity as producer of "NYPD Blue" he won the Emmy Award for Outstanding Drama Series in 1995 and the Golden Globe Award for Best Television Series – Drama in 1993.  He was also nominated for this award for his work on "NYPD Blue" on five other occasions (in 1994, 1996, 1997, 1998 and 1999).  He won a George F. Peabody for "Raging Bulls" (Season 6, episode 8), an episode he directed for NYPD Blue. "The Infinite Vulcan" is the seventh episode of the of the American animated science fiction television series "".  It first aired on NBC on October 20, 1973, and was written by "" cast member Walter Koenig.  It was the actor's only involvement in the series, as he had not been hired to voice Pavel Chekov in the animated version due to financial issues with production.  With "The Infinite Vulcan", Koenig became the first member of the "Star Trek" cast to write an episode for the franchise.  As with many episodes of the show, the episode was directed by Hal Sutherland. "" is a 61-episode American animated television series created by Michael Dante DiMartino and Bryan Konietzko.  It first aired on February 21, 2005, on Nickelodeon with a one-hour series premiere and concluded its run with a two-hour TV movie on July 19, 2008.  The "Avatar: The Last Airbender" franchise refers to each season as a "Book", in which each episode is referred to as a "chapter".  Each "Book" takes its name from one of the elements that Aang, the protagonist, must master: Water, Earth, and Fire.  The show's first two seasons each consisted of 20 episodes, while the third season had 21.  In addition to the three seasons, there were two recap episodes and three "shorts".  The first recap summarized the first eighteen episodes while the second summarized season two.  The first self-parody was released via an online flash game.  The second and third were released with the Complete Second Season Box Set DVD.  The entire series has been released on DVD in Region One, Region Two and Region Four. Ben 10: Secret of the Omnitrix is an animated science fiction film based on the American animated television series "Ben 10".  It aired on August 10, 2007, in the United States and on October 22, 2007, in the UK.  During the week-long special "Ben 10 week" in April 2008, it was revealed that this movie serves as the official finale to the series even though it was aired months before the last eight episodes of the fourth season.  It was released to DVD on May 20, 2008 exclusively at Wal-Mart stores.  However, neither of the alternate versions were on the disc, merely the original with Heatblast, but the fourth season DVD contains all four versions, plus the pop up trivia version.  Despite that it is listed in the production or chronological order as the first three episodes of season 4 which means the movie is not the last animation or episode of the series and in Cartoon Network airing order which are episodes 44-46 of the series or season 4 episodes 5-7, in an official episode order of the show, it is the series finale and the last episode canonically (it is because the final episode is not canon, as it starts with a comic book, just like the Gwen 10 episode and are episodes 49-51). The tenth season of "South Park", an American animated television series created by Trey Parker and Matt Stone, began airing on March 22, 2006.  The tenth season concluded after 14 episodes on November 15, 2006.  This is the first season in which Kenny does not die and the last season featuring Isaac Hayes (the voice of Chef) as Hayes quit the show following the backlash behind season nine's "Trapped in the Closet" episode.  This season also had a minor controversy when the Halloween episode "Hell on Earth 2006" depicted "The Crocodile Hunter's" Steve Irwin with a stingray lodged in his chest getting thrown out of Satan's Halloween party for not being in costume.  Episode 2 in this season is the last one with the Braniff Airlines logo.  All the episodes in this season were written and directed by Trey Parker.
Answer: 28