http://orbit.medphys.ucl.ac.uk/Some of you might know about it already, but just to spread the word, i am going to post a topic about it.
Its a very realistic game, that pays attention to alot of detail in spacecraft
You can download addons for it as well, or make your own, one addon lets you check the Internet in-flight! you can mod it for yourself too!
so maybe we might see the first blockhead in space after all..(Yes that does mean i am working on a blockland decal for the ships)