Last week’s premiere episode revealed this new comedy series to be a very smart, intentionally unusual series – with doses of everything from Louie and Curb Your Enthusiasm to Inside Amy Schumer and Flight of the Conchords. Smart, smart series. And tonight, “Garfunkel and Oates,” otherwise known as Riki Lindhome and Kate Micucci, are shown struggling to write a new song – as are their porn-star doppelgangers. (Say, what rhymes with doppelgangers? Paper hangers?)