Portal joins forces with Half-Life in this short film called When Gordon Met Chell.
Counter-Strike: Global Offensive - Trailer
Valve show a grittier more realistic use for Source Filmmaker with a trailer for Counter-Strike: Global Offensive.
Source Filmmaker - Valve Favorites
Valve are showcasing some of the best short animations created with their new Source Filmmaker software.
Portal 2 - Boots
The science of the boots used in Portal 2 is explained in this latest video from Valve.