Two FBI agents spent nine seasons nearly proving aliens exist, which must've been properly frustrating.
Fun fact: Fox executives tried to recast Gillian Anderson after the pilot, considering her insufficiently glamorous for television.
Got cancelled after one season and fans have been in a state of mourning for twenty-odd years now.
Fun fact: Fox cancelled the show after airing just 11 of 14 produced episodes, then it spawned a feature film.