The CryEngine 3 has a tech demo for GDC 2012 highlighting its capabilities.
CryEngine - Showcase Trailer
Crytek have released a trailer to showcase their CryEngine technology.
Kingdom Come: Deliverance - Kickstarter
Kingdom Come: Deliverance is a beautiful game, powered by Cryengine, currently seeking funding on Kickstarter.
Check out this trailer for Crytek's Warface, running on the gorgeous CryENGINE 3.