Chaos Group have posted a Film & VFX Showreel for their V-Ray render engine.
Facial Animation Test
Mathieu Aerni has posted this facial expression test done at Blur Studio.
V-Ray Feature Films Showreel 2013
Chaos Group have posted the official V-Ray feature film showreel for 2013.
V-Ray Demo Reels 2012
Here are all the demo-reels released by Chaos Group for V-Ray, in multiple categories.