The 70s (and 80s) have a ridiculous number of awesome movie scores.
Superman - John Williams
Halloween - John Carpenter
Jaws - John Williams
The Exorcist - Mike Oldfield
Sorcerer - Tangerine Dream
Chinatown - Jerry Goldsmith
Capricorn One - Jerry Goldsmith
Deep Red - Goblin
Rocky - Bill Conti
Tora! Tora! Tora! - Jerry Goldsmith
My Name Is Nobody - Ennio Morricone
Star Wars - John Williams
Taxi Driver - Bernard Herrmann
The Godfather - Nino Rota
The Omen - Jerry Goldsmith
Straw Dogs - Jerry Fielding
Diamonds Are Forever - John Barry
Suspiria - Goblin