Any of John Williams's epics:
-Indiana Jones - main theme, "Crusade of the Slave Children" (Temple of Doom)
-Star Wars - Main theme, "Imperial March", "The Asteroid Field"
-Superman - Main theme
-Harry Potter - Main theme
-Jurassic Park - Main theme
and so forth
Honorable mention:
-Pirates of the Caribbean - main theme
-Lord of the Rings - pretty much all of it, but especially "The Uruk-Hai", "The Lighting of the Beacons"
-Batman - main theme (Danny Elfman)
-James Bond - main theme
-Ben Hur - "Parade of the Charioteers"
-The Incredibles - "The Incredits"
-Star Treck (2009) - main theme
....I should stop.
Aw, geez. I made this huge post and didn't even notice video game themes were allowed. Well, it seems a second installment will be required. Sorry about the huge post.