Okay, I've been doing some more research on the internet, and the following is my official gotta see list. I've cut out what I was unsure about, and have added in a few must see films, even added some animated titles. I'm looking for movies that really capture the feeling of the era (the way I see it, even if the movie sucks, its still a learning experience):
Grindhouse List
Class Of Nuke 'em High (1986)
Ilsa, She-Wolf Of The SS (1975)
Maniac Nurses (1990)
Cannibal Ferox (1981)
Beyond the Valley of the Dolls (1970)
Coffy (1973)
Switchblade Sisters (1975)
Lone Wolf And Cub (1972)
Rocky Horror Picture Show (1975)
I Drink Your Blood (1970)
Sweet Sweetback's Badasssss Song (1971)
Blood Feast (1963)
Pinky Violence Collection
Heavy Metal (1981)
Please Don’t Eat My Mother (1973)
Faster, p***ycat! Kill! Kill! (1965)
Cannibal Holocaust (1980)
I Spit On Your Grave (1978)
Vanishing Point (1971)
I Dismember Mama (1974)
Blue Sunshine (1976)
Reform School Girls (1986)
The Girl Who Knew Too Much (1963)
Ms. 45 (1981)
The Gore Gore Girls (1972)
Billy Jack (1971)
Mountain Of The Cannibal God (1978)
The Bird With The Crystal Plumage (1970)
Two Thousand Maniacs (1964)
Don’t Answer The Phone (1980)
Suspiria (1977)
The Good, The Bad, and The Ugly (1966)
Amazon Women On The Moon (1987)
The Sell-Out (1976)
Nightmare City (1980)
The Girl From Starship Venus (1975)
Eating Raoul (1982)
Death Race 2000 (1975)
Five Deadly Venoms (1978)
Mondo Cane (1962)
Pink Flamingoes (1972)
Faces Of Death (1978)
Nude On The Moon (1961)
She-Devils On Wheels (1968)
Q-The Winged Serpent (1982)
Zombi (1979)
Street Trash (1987)
Fight For Your Life (1977)
Foxy Brown (1974)
Plan 9 From Outer Space (1959)
Glen Or Glenda (1953)
The Toxic Avenger (1985)
5 Dolls For An August Moon (1970)
Vampyros Lesbos (1971)
Caged Heat (1974)
The Street Fighter (1974)
Emmanuelle (1974)
Marijuana: Assasin Of Youth (1937)
Reefer Madness (1936)
Dawn Of The Dead (1978)
The Story Of “O” (1975)
Fritz The Cat (1972)
Shaft (1971)
The Devil’s Nightmare (1971)
Vampyres (1974)
Escape From Hell (1980)
House Of Whipcord (1974)
The Last House On The Left (1972)
The Beyond (1981)
For A Few Dollars More (1965)
36 Chamber Of Shaolin (1978)
Blacula (1972)
Thriller: A Cruel Picture (1974)
Basket Case (1982)
Dr. Butcher, MD (1980)
Mom And Dad (1945)
Brain Damage (1988)
Superfly (1972)
Rock And Rule (1983)
Brain of Blood (1972)
Also, I've gotten a lot of good suggestions since I first posted, so I am planning to make a second list, starting with Burgomaster's suggestions. Please keep posting ideas, not just horror but any kind of 70's exploitation.