Portal 2: Perfect 10 (video)

From the Portal Wiki

Portal 2: Perfect 10 is a video which was released by Valve on April 29, 2011 in order to promote Portal 2. The video contains a montage of both in-game and pre-rendered footage, including elements from Panels, Bot Trust, Turrets, Boots and the Full Co-op Trailer among others. The video also contains a number of hand-picked quotes taken from various publications and game review sites.