I love cool looking spaceships, who doesn't? these days, most sci-fi ships tend to be rather bland and realistic. forget that, gimme a sleek colorful ship any day- the Enterprise, the Jupiter II, or the Ultra Hawks from "Ultra Seven" are all awesome.
Thunderbirds are Go! (1966). it's generally regarded as the favorite, and it's a great looking ship. it's used to haul around the various machines and items used for International Rescue's missions.
Destroy All Monsters, and played an integral role in the saving of the Earth.