Hmmm, off the top of my head...

1920s PHANTOM OF THE OPERA
1930s FRANKENSTEIN
1940s FRANKENSTEIN MEETS THE WOLFMAN (first horror flick I saw on TV)
1950s I WAS A TEENAGE WEREWOLF
1960s ONE MILLION YEARS B.C.
1970s HALLOWEEN
1980s THE FLY
1990s THE BLAIR WITCH PROJECT
2000s SHAUN OF THE DEAD