Portal 2 E3 2010 Demo Trailer #2 and #3

Excursion Funnels and Faith Plates are two of the new mechanics in Portal 2 that may be leveraged for moving objects and yourself though the world
Valve has released a couple of new movies for Portal 2, showcasing this sequel set to be available in 2011, for PC and PS3. Portal was originally released in 2007 and earned over 70 industry achievement awards.