
The first time since I started this thread that I've actually gotten a chance to read all the replies, and check out the pics.
I voted other myself, but only because for me, I'm afarid it's a dead tie between Star Trek and Star Wars.
As Matrix man said, for sheer variety and coolness, you just can't beat Star Wars. Tie Fighters, Bombers and Interceptors, the agile X-Wings, the clumsy Y-Wings, the massive sleek Star Destroyers, Mon Calamari Cruisers, Corellian Corvettes, and the unparalleled Millenium Falcon of course.
(I used to have a bunch of 3-d models of a lot of the ships for TrueSpace, and used to amuse myself by making .avi's of dogfights in space.)
Star Wars though, well, the ships tend to look pretty utilitarian, (although not as much as those Eagle ones). If you're looking for slick, smooth and impressive ships, then Star Trek is where to go.
From TNG's Enterprise, (Sorry MM, child of the digital age, you know

(Just)) to the beautiful Defiant, I always thought that those guys knew what a spaceship should look like.
Their size, functionality, (can't believe nobody has yet told HLT that they're "replicators") and sheer design stylishness has always impressed me. Even DS9 was pretty damn cool. Voyager too.
The Borg cubes always impressed me, simply because they look so wrong, but of course, being aerodynamic isn't important where there isn't any air.
And how can you not love the Bird of Prey? Awesome ships all. Like I said, a dead tie.
Some other nice ones mentioned, I must say, but they just don't compete. Red Dwarf for example...sure, 5 miles long...ugly as sin though. (Deliberately? IIRC)
And while I'm always impressed by FarScape's ships, they just don't have the special place in me that ST and SW ones do. *sigh*
--A