The big arc on this season of Parks and Recreation is the campaign of Leslie Knope (Amy Poehler) for city council.  It has been an open question who her opponent would be.  The series has secured several high profile guest stars in the past, like Patricia Clarkson, Parker Posey, and Louis CK, so we had high hopes for the casting possibilities.  Parks and Rec did not disappoint: Vulture hears that Paul Rudd will play an opposing candidate in at least one upcoming episode.  Rudd reportedly shot his scenes at the end of last year, suggesting he will pop up in the next month or so.  Rudd's loveable shtick is perfect for the tone of the show, and I am excited to see how he plays off the cast, especially in a political debate scenario with Wet Hot American Summer co-star Poehler.  Rudd will next be seen on the big screen in Wanderlust, opening February 24.Hit the jump for details on Dermot Mulroney's upcoming role in New Girl.New Girl got a lot of mileage out of Justin Long as the male equivalent (and thus perfect match for) Zooey Deschanel's Jess.  It sounds like the writers are headed in a different direction with her next love interest based on the casting of the suave Mulroney. TV Line says Mulroney will play a "a handsome, intelligent and wealthy gentleman who also happens to be the father of one of Jess’ students."  They dislike each other at first, but give into their apparent chemistry over multiple episodes.Where the Venn diagram intersects: both Rudd and Mulroney had guest arcs on Friends, including two episodes that featured both.