http://www.learnvray.com
The movie "Gravity" had a great impact on my fantasy. So I started dreaming my house, full of famous design chairs, and no gravity. So relaxing :)
The challenge for me was using V-Ray with no tricks, neither complex settings. Everything is really simple, following a "rigorous" photographic approach, as V-Ray was a DSLR in my hands.
I didn't used any render element for post production. Simple flare a part, I used basic options in Photoshop, just like real photographers do for their real shots.