Jon Stewart’s been hosting The Daily Show for 15 years, and during that time he’s interviewed so many people about their movies and books that it makes sense that he would miss out on actually seeing/reading a handful of them, or a bunch of them, or, apparently, all of Maggie Gyllenhaal’s filmography.

In the supercut below, which Mark Ruffalo sprung on an unsuspecting Jon Stewart last night, we get to see a decade and a half of Stewart setting aside all false pleasantries as he admits to not knowing anything about his guests’ movies, shows, or books. Obviously I can’t speak for the guests, but I, for one, appreciate Stewart’s honesty.