Gather up some vintage horror movies to watch this Halloween, and you may just be surprised by a familiar face. Wired rounds up 30 celebrities who got their start in horror movies. A sampling: 
 -  Jon Stewart: The Faculty, 1998
-  Joseph Gordon-Levitt: Halloween H20: 20 Years Later, 1998
-  Renee Zellweger: Texas Chainsaw Massacre: The Next Generation, 1994
-  George Clooney: Return to Horror High, 1987
-  Ben Affleck: Buffy the Vampire Slayer, 1992
-  Charlize Theron: Children of the Corn III: Urban Harvest, 1995
-  Matthew McConaughey: Texas Chainsaw Massacre: The Next Generation, 1994