http://ws-clave.deviantart.com/
This guy does some interesting stuff, mostly vector work. The "Fantasy planes" are pretty cool I thought. They're basically reskinned versions of planes, for example, what would it look like if a Ju-88 was used by the lebanese.
I've tried my hand at some aviation themed works too. I'm not the best really, but I thought this one came out half decent. I thknk I may have actually posted it here a long time ago aswell...
http://killahound.deviantart.com/art...1349391?q=&qo=