Just thought I'd post up about this site I tend to check it every week-ish :) to see some stunning artwork. This week its the work of Jim Hatama, some stunning starship concepts and i very much like this guys style. Check it out here http://conceptships.blogspot.com/2009/05/concept-ships-by-jim-hatama.html
It takes time to load but it's well worth it folks.
I will try to drop some links in to other artists work as I (a) remember to do so and (b) stumble on them :)