Valve have announced the Source Filmmaker, their tool for creating animated films in a very intuitive way.
Valve have created Expiration Date, a 15 minute animated short featuring all the Team Fortress characters.
Half-Life: Raise the Bar
Half-Life: Raise the Bar is a fan-made short film inspired by the Half-Life franchise.
Team Fortress 2 - Meet The Pyro
Valve have released a brilliant new Team Fortress 2 character-centric short animation, this time for the Pyro.