Fans are making funny videos with Valve's free Source Filmmaker (SFM) tool, and we've collected five more of them, including 'Austin Powers' and more.

Featured mashup videos of the week, including Duke Nukem reading '50 Shades Of Grey', Batman re-cut, and 'Pulp Fiction' and 'Back To The Future' with 'Team Fortress 2' characters.

Valve's Source Filmmaker is available for free, and fans have already created these fourteen silly videos with 'Team Fortress 2' characters.

As we all know, we finally, finally met the Pyro in "Team Fortress 2".

[via]Every year we post several geeky parody valentines before Valentine's Day.

Team Fortress 2 is very nearly a perfect game, but everything has flaws, and to many people, that flaw is.

Ah, the Goomba Stomp.

"Team Fortress 2" is one of the few games designed for multiplayer that genuinely works, possibly because instead of being a festival of self-seriousness and seven-year-olds whining about how you're better than them, it's got the typical Valve sense of humor.

Sam Gorski and Nick Pueringer of Corridor Digital (AKA our new best friends who don't know us) have made another great fan film to go with Frozen Crossing and Prism to name just a couple of theirs.