The CryEngine 3 has a tech demo for GDC 2012 highlighting its capabilities.
CryEngine 3 - Enodo Real-Time Demo
Enodo have posted a real-time reel running in CryEngine 3.
Crysis 3 - Multiplayer Trailer
The CryEngine shines in this new trailer for Crysis 3's multiplayer modes.
Check out this trailer for Crytek's Warface, running on the gorgeous CryENGINE 3.