Guess a Classic Horror/Sci-Fi by a Description

[horrorhunter]

More Hints:

It's from the '70s. It stars a guy who was in several Horror flicks of the time, and was also a guest star in a Kolchak episode. His performance in this film is very good. He's one of my favorite actors.

[Memphremagog]

The Devil's Rain?

[horrorhunter]

Nope.

"Charge! Charge! Charge!"

(nothing to do with the cavalry) 

[horrorhunter]

Another day, another hint:

The star was in a fairly well known Eurohorror vampire flick that had a title change to match the title of this film so they could play a double bill with similar sounding titles. They made a great Horror drive-in double feature back in the '70s with this fellow starring in both films. The vamp film also starred another male lead well known in the genre as well as two major Eurohotties.

[Memphremagog]

Simon King Of the Witches?

[horrorhunter]

That's it.

[Memphremagog]

Medical man with a lousy home life finds escape at the movies and researching people's fears..

[marsattacks666]

Medical man with a lousy home life finds escape at the movies and researching people's fears..

Does this film involve a Gorilla or Monkey?

[Mord]

The Tingler?

[Memphremagog]

The Tingler?

Right! Your turn!

[Memphremagog]

Does this film involve a Gorilla or Monkey?

Not at all.

[horrorhunter]

Does this film involve a Gorilla or Monkey?

Involves something on your back... but it ain't a monkey. 

[Mord]

Right! Your turn!

Thank you.

A cross country trip winds up with finger fries, dead cops, and a beautiful woman torn apart. This is waaay too easy for you guys.

[Anton Phibes]

The Hitcher

[Mord]

The Hitcher

Bingo! Your turn.