Conan The Barbarian is definitely on my list. It's an amazing orchestral soundtrack.
1. Top Gun. Cheap Trick, Kenny Logins, Berlin. There's some solid 80's pop music on their. Mighty Wings by Cheap Trick is awesome.
2. Heavy Metal. Black Sabbath, Devo, Cheap Trick, Stevie Nicks, Grand Funk Railroad and several others I can't think of at the moment.
3. Conan The Barbarian. This is my favorite movie from Arnold, but I'd be pressed to not like Predator and Terminator 2 just as much.
4. Vision Quest. Journey, John Waite, Red Rider and even Madonna. It's a good listen when I'm in the mood for some 80's pop rock.
5. Saturday Night Fever. I'm not really a disco fan, but this movie was imbedded in my early teen years. It's grown on me over the years.
Honorable mentions to Star Wars Trilogy, Superman, Fast Time at Ridgemont High and TRON.