inFamous 2 - PAX 2010 Behind Closed Doors : Gameplay Trailer

Game - inFamous 2
Publisher - Sony Computer Entertainment
Developer - Sucker Punch Productions
Platform - PS3
Release Date - 05 July 2011

Source
http://www.youtube.com/user/gamingbits

Portal 2 - PAX 2010 Screens

Game - Portal 2
Publisher - Valve Corporation
Developer - Valve Software
Engine - Source
Platform - PC, 360, PS3, Mac
Release Date - 09 February 2011

Source
http://gameinformer.com/