I recently tried X-Files after I saw the movie - I liked the light-hearted episodes. Don't like surreal or spooky stuff. I would have liked it more if it was more grounded like ... SG1 or so.
I really like the team chemistry and of course, Scully. But I don't like nightmare-inducing episodes. I don't get why people like that stuff. I also always skip such episodes in Star Trek, Stargate or whatever Scifi.