One of my favorite film blogs is Rupert Pupkin Speaks. I love all of his eclectic film lists. Where else are you going to find Favorite Gene Hackman Films and a list of 'One Crazy Night' Movies?
Since it's nearing Halloween, he provided me his top 10 underrated 70s & 80s horror films. I've seen The Brood, The Changeling, and Deadly Eyes. Now I must check out the others. Be sure to read Joe Dante's favorites posted on Rupert's blog.
Top 10 Underrated 70s & 80s Horror Films (from Rupert Pupkin Speaks)
1. The Brood (1979, David Cronenberg)
2. Possession (1981, Andrzej Zulawski)
3. Bad Dreams (1988, Andrew Fleming)
4. The Changeling (1980, Peter Medak)
5. Deadly Eyes (1982, Robert Clouse)
6. Nightmare City (1980, Umberto Lenzi)
7. The Prowler (1981, Joseph Zito)
8. Blood and Lace (1971, Philip S. Gilbert)
9. The Deadly Spawn (1983, Douglas McKeown)
10. Neon Maniacs (1986, Joseph Mangine)