S2, E16: When Leslie (Amy Poehler) hears her mom'’s (guest star Pamela Reed) story about an old flame (guest star John Larroquette), she and her boyfriend Justin (guest star Justin Theroux) track him down and reunite them on Valentine’'s Day. Meanwhile, Andy (Chris Pratt) and his band are nervous about playing a gig at the Senior Center. Aziz Ansari, Nick Offerman, and Aubrey Plaza also star.