I always thought spaceships with huge rotating sections were awesome. Since they're semi-plausible also, it means ships of this kind are sorta closer to reality than most of the static starships in most science fiction.
I originally just wanted to polish up the exile Taiidan Heavy Cruiser, but then I decided to draw the Omega and the Leonov to show where the inspiration came from.
I also drew them to ward off comments of "Hey, a Taiidan-Omega Hybrid!" See for yourself, the only things they have in common are the rotating section and not much else.
Earth Alliance Omega Destroyer = Babylon 5
Alexei Leonov = 2010 (movie version)
Exile Taiidan Heavy Cruiser = Homeworld (alternate)