Gallery: 10 Top X-Files Episodes

Scully: "Where the hell did it come from?"
Mulder: "I don't know. But it looks like I'm gonna have to tell Skinner that his suspect is a giant bloodsucking worm after all."

The Host, alongside Ice and Squeeze, is one of the most popular freak-of-the-week episodes, about a man-sized tapeworm living in the sewers. Thinking that his boss, AD Skinner, had sent him to the sewers as punishment, Mulder had little idea man-made chemicals had created a sewer monster.

The man behind the mask was actually Darin Morgan, who went on to write and story edit many of the key X-Files episodes over the following 8 years.

Highlight: The face off between man and tapeworm. After nearly suffering at the hands of the monster, Mulder manages to cut it in half. Only, that's a fate a worm can survive...