 Among the songs performed by Mouse Rat in " Galentine 's Day " were " The Way You Look Tonight " , originally performed by Fred Astaire in the 1936 film , Swing Time . Andy 's bandmate suggests he sings the " Let 's Call the Whole Thing Off " more like jazz musician and trumpeter Louis Armstrong , who Andy admits he has never heard of . Andy and his band also performs " I Only Have Eyes for You " and " I 've Got You Under My Skin " . Leslie said reuniting Marlene and Frank would be like reuniting Romeo and Juliet , the protagonists of the William Shakespeare play of the same name , or reuniting actress Jennifer Aniston and actor Brad Pitt . She also warns to the camera for Aniston to " stay away from John Mayer " , the musician who previously dated Aniston . In the days prior to the original broadcast of " Galentine 's Day " , Mayer publicly apologized for a number of explicit sexual and racial comments he had made in the past months , which prompted news outlets to praise Parks and Recreation for the timeliness of their Mayer joke . Ironically , in May 2011 , Jennifer Aniston started dating Justin Theroux , who guest starred in the episode , and they later married . Frank made a reference to a recurring gag from Arrested Development when , after being rejected , he announced to Marlene , " take one last look ... because you 'll never see this body again . " 
 Among the songs performed by Mouse Rat in " Galentine <a href='null_genetive' title='1'><mark>'s</mark></a>Day " <a href='uninflect' title='2'><mark>were</mark></a> " The Way You Look Tonight " , originally performed by Fred Astaire in the 1936 film , Swing Time . Andy <a href='null_genetive' title='3'><mark>'s</mark></a>bandmate <a href='uninflect' title='4'><mark>suggests</mark></a> he <a href='uninflect' title='5'><mark>sings</mark></a> the " Let 's Call the Whole Thing Off " more like jazz musician and trumpeter Louis Armstrong , who Andy <a href='uninflect' title='6'><mark>admits</mark></a> he <a href='been_done' title='7'><mark>has</mark></a> never heard of . Andy and his band also <a href='uninflect' title='8'><mark>performs</mark></a> " I Only <a href='got' title='9'><mark>Have</mark></a> Eyes for You " and " I 've <a href='uninflect' title='10'><mark>Got</mark></a> You Under My Skin " . Leslie said reuniting Marlene and Frank would be like reuniting Romeo and Juliet , the protagonists of the William Shakespeare play of the same name , or reuniting actress Jennifer Aniston and actor Brad Pitt . She also <a href='uninflect' title='11'><mark>warns</mark></a> to the camera for Aniston to " stay away from John Mayer " , the musician <a href='null_relcl' title='12'><mark>who</mark></a>previously dated Aniston . In the days prior to the original broadcast of " Galentine <a href='null_genetive' title='13'><mark>'s</mark></a>Day " , Mayer publicly apologized for a number of explicit sexual and racial comments he <a href='been_done' title='14'><mark>had</mark></a> made in the past months , which prompted news outlets to praise Parks and Recreation for the timeliness of their Mayer joke . Ironically , in May 2011 , Jennifer Aniston started dating Justin Theroux , <a href='null_relcl' title='15'><mark>who</mark></a>guest starred in the episode , and they later married . Frank made a reference to a recurring gag from Arrested Development when , after being rejected , he announced to Marlene , " take one last look ... because you 'll never see <a href='None' title='16'><mark>this</mark></a><a href='negative_concord' title='17'><mark>body</mark></a> again . " 
Among da songs performed by Mouse Rat in " Galentine  Day " was " The Way You Look Tonight " , originally performed by Fred Astaire in tda1936 film , Swing Time . Andy  bandmate suggest he sing the " Let 's Call the Whole Thing Off " more like jazz musician and trumpeter Louis Armstrong , who Andy admit he done never heard of . Andy and his band also perform " I Only Got Eyes for You " and " I 've Get You Under My Skin " . Leslie said reuniting Marlene and Frank would be like reuniting Romeo and Juliet , thdarotagonists of the William Shakespeare play of the same name , or reuniting actress Jennifer Aniston and actor Brad Pitt . She also warn to the camera for Aniston to " stay away from John Mayer " , thedasician previously dated Aniston . In the dayz prior to the original broadcast of " Galentine  Day " , Mayer publicly apologized for a number of explicit sexual and racial comments he done made in the dat months , which prompted news outlets to praise Parks and Recreation for the timeliness of their Mayer joke . Ironically , in May 2011 , Jennifer Aniston started dating Justin Theroux , guest starred in the episode , and they later married . Frank made a reference to a recurring gag from Arrested Development when , after being rejected , he announced to Marlene , " take one last look ... cuz you 'll never see no body again . "