The portal2_teaser_v09_m13_h264.mov file you have requested: Media / Videos and Trailers / Official Videos / Portal 2 E3 2010 Teaser Trailer (HD) - 105.09mb is not available. Perhaps try browsing all files for the game Portal 2 and upload any files you want to share or are missing. This is the only information we could locate:
Valve has released a teaser trailer for Portal 2. This trailer contains just under a minute of cinematic footage for you to enjoy.