1) A ram, just at the moment of impact, the explosive warheads on the rammer ship detonating in a huge explosion, and little guys sailing into space, screaming their Last from hemorrhaging lungs as they perish horribly
2) The Kobayashi Maru! A historical scene, depicting Tiberius' Triumph
3) A spacedrop. Ground troops dropping from orbit, hundreds of tiny contrails as the outer ablative shielding begins to burn off...read the relevant sections of Starship Troopers for inspiration. Umm, I mean the book. I have no idea about the movie, I never saw it.
4) A planetary bombardment. One or more gunboats, loaded with Napalm V, pLastering the living **** out of a planet.
5) A ringworld. The star, a bold young yellow one, gleaming on the endless ribbon of earth, mountains, and lakes...