<Tr> <Td_colspan="2"> List of Parks and Recreation episodes </Td> </Tr> <P> The fourth season of Parks and Recreation originally aired in the United States on the NBC television network, and began on September 22, 2011, and ended on May 8, 2012 . The season contained 22 episodes . </P> <P> As with past seasons, it focused on Leslie Knope (Amy Poehler) and her staff at the parks and recreation department of the fictional Indiana town of Pawnee . However, this season featured an overarching story arc, beginning in the first episode and culminating in the finale, where Leslie ran for the city council of Pawnee . </P> <Ul> <Li> Amy Poehler as Leslie Knope, a mid-level bureaucrat with a strong love of her home town of Pawnee, who has not let politics dampen her sense of optimism; her ultimate goal is to become President of the United States . Poehler departed from the NBC sketch comedy series Saturday Night Live, where she was a cast member for nearly seven years, to star in Parks and Recreation . It was only after she was cast that Daniels and Schur established the general concept of the show and the script for the pilot was written . </Li> <Li> Rashida Jones as Ann Perkins, a nurse and political outsider who gradually becomes more involved in Pawnee government through her friendship with Leslie . Jones was among the first to be cast by Daniels and Schur in 2008, when the series was still being considered as a spin - off to The Office, where Jones had played Jim Halpert's girlfriend Karen Filippelli, who formerly worked at the Stamford Branch but was soon transferred to the Scranton Branch in the 3rd season . </Li> <Li> Aziz Ansari as Tom Haverford, Leslie's sarcastic and underachieving subordinate, who eventually begins to consider leaving his city hall job to pursue his own entrepreneurial interests . As with Jones, Daniels and Schur had intended to cast Ansari from the earliest stages of the development of Parks and Recreation . </Li> <Li> Nick Offerman as Ron Swanson, the parks and recreation director who, as a libertarian, believes in as small a government as possible . As such, Ron strives to make his department as ineffective as possible, and favors hiring employees who do not care about their jobs or are poor at them . Nevertheless, Ron consistently demonstrates that he secretly cares deeply about his fellow co-workers . </Li> <Li> Aubrey Plaza as April Ludgate, a cynical and uninterested parks department intern who eventually becomes the perfect assistant for Ron . The role was written specifically for Plaza; after meeting her, casting director Allison Jones told Schur, "I just met the weirdest girl I've ever met in my life . You have to meet her and put her on your show ." </Li> <Li> Chris Pratt as Andy Dwyer, a goofy and dim - witted but lovable slacker . Pratt was originally intended to be a guest star and the character Andy was initially meant to appear only in the first season, but the producers liked Pratt so much that, almost immediately after casting him, they decided to make him a regular cast member starting with season two . </Li> <Li> Adam Scott as Ben Wyatt, a brilliant but socially awkward government official trying to redeem his past as a failed mayor in his youth . Scott left his starring role on the Starz comedy series Party Down to join the show . </Li> <Li> Rob Lowe as Chris Traeger, an excessively positive and extremely health - conscious government official . Unlike Scott, Lowe was originally expected to depart after a string of guest appearances, but later signed a multi-year contract to become a regular cast member . </Li> <Li> Jim O'Heir as Jerry Gergich, the office scapegoat and overall klutz, with unbelievably attractive daughters and wife . </Li> <Li> Retta as Donna Meagle, who's sassy and savvy and has little patience for stupidity . </Li> </Ul>

First treat yo self parks and rec episode