 When Leslie ( Amy Poehler ) learns Pawnee is being sued by the previous owners of the lot where she is seeking to build a park , Ann ( Rashida Jones ) refers her to her lawyer friend Justin Anderson ( Justin Theroux ) , who she calls " the greatest guy ever " . Justin helps Leslie resolve the issue , and the two seem to get along very well together . Having recently broken up with her boyfriend , Leslie asks Ann to set her up on a date , but is surprised when Ann hesitates to set her up with Justin . Instead , she arranges a date with Chris ( Will Arnett ) an MRI technologist Ann works with . The date goes poorly , with Chris appearing annoyed upon learning Leslie attended a rival college , and that she was a director of regular parks , not amusement parks . 
