The X-Files episode "Nothing Important Happened Today" airs 2001

The first episode of the ninth season of the X-Files, Nothing Important Happened Today, aired November 11, 2001.  I had lost touch with the series, but when I saw Lucy Lawless in the promos, I made a point to watch it.  David Duchovny was not in this episode, so Gillian Anderson (Agent Scully) was paired with Robert Patrick (Agent Doggett), as they investigate a beautiful woman (Lucy Lawless) who can breathe underwater.  

Cary Elwes also appears in this episode.  

"The X-Files" premieres 1993

One of my favorite shows ever, The X-Files, premiered on Fox TV September 10, 1993.  Starring David Duchovny as Fox Mulder, Gillian Anderson as Dana Scully and Mitch Pileggi (woof!) as Walter Skinner, the show delved into the paranormal, aliens and government conspiracies.

Bad Blood, Season 5 Episode 12, with Luke Wilson as the vampire sheriff is probably my favorite episode of the series.