"X-Files": The 13 Most Surprising Guest Stars

The “X-Files” revival has (so far) given us Joel McHale as a conspiracy theorist and Doug Savant as a mad doctor experimenting with alien DNA. In the show's original run, unexpected guest stars were as nearly as common as alien sightings and Scully autopsies. Here are some of the biggest names – from Burt Reynolds to Ryan Reynolds – who've ever appeared on the show, many of whom didn't get famous until long after their brush with the paranormal. – Sharon Knolle