I love how in Mass Effect the ships look like something that the human race would actually produce, I always thought that both Normandys (i prefer the SR-2 due to size) appear to be a pretty natural progression from the NASA space shuttle, this gives them a more realistic feel than say the Enterprise or the Andromeda... cant wait to see the Alliance armada completely rendered for ME3!
Even the alien ships look like something that humans might engineer. Though not bad in itself. I quite like the look of most of the ships.
I've got a couple of draft versions of ships that BioWare did but never made it to the final game, which is a shame. I was wondering about uploading them, though they don't have any textures, so they would be a plain colour.