"Ron and Tammy" is the eighth episode of the second season of Parks and Recreation, and the fourteenth overall episode of the series. It originally aired on NBC in the United States on November 5, 2009. In the episode, the library department tries to take control of a vacant lot where Leslie plans to build a park. Ron's ex-wife, one of Leslie's directors, tries to use Ron to get her way. The episode was written by Mike Scully and directed by Troy Miller.
"Ron and Tammy" featured Megan Mullally, the real-life wife of Parks actor Nick Offerman, in a guest appearance as Ron's ex-wife, Tammy. According to Nielsen Media Research, it was seen by 4.93 million household viewers; its rating of 2.2 was the season's highest to that point. "Ron and Tammy" received generally positive reviews and is widely considered one of the best Parks and Recreation episodes, with many commentators praising Offerman's performance. Tammy later returned for the third season sequel episode, "Ron & Tammy: Part Two".Overview from themoviedb.org