The X-Files stars David Duchovny and Gillian Anderson have played Agents Fox Mulder and Dana Scully for more than 20 years, but there's one moment they cherish above all the rest - and one close to many fans' hearts. Season 5's "Post-Modern Prometheus" is a black-and-white episode that blends B-movies, Jerry Springer and comic books into a delightfully light comedy that ends with the two stars slow-dancing.