Since its launch, Valve's Source Filmmaker has helped budding directors create literally hundreds of movies - some good, some bad, most.... incredibly goofy. The Team Fortress 2 cast especially has sung seemingly every song, played out every meme and worn every hat and every expression - sometimes at once! But what are the ten best creations? We've scoured YouTube in search of the funniest, the most dramatic, and the just plain prettiest Source Filmmaker movies.

Scout vs. Witch



Easily one of the best directed SFM movies out there, mixing Team Fortress, Left 4 Dead and a fine sense of timing. Scout (no relation to Scout) is one of the more popular TF2 mercs, with his cockiness the perfect antidote to all that zombie misery. At least, while the moment lasts.

Just One More Hat



And he's back, in this fashion-conscious spin on one of Disney's most parodied songs. More worksafe than Dirty Little Mermaid, more morally conscious than Slaughter Your World, it also wins bonus points for having an original TF2 version of a song instead of just looping in a more general one.

Meet The Family



Mostly made (naughty naughty) with the leaked SFM, this was one of the first epic projects to be finished and still one of the best. Scout and Spy team up as literal brothers in blood to kick off a perfectly choreographed race for that all-important Intelligence. Guest starring music from The Incredibles to add pace and more than a little style. No "da-da-da" sting at the end though.

Adventures Of The F2P Engineer



He's smart enough to whip up teleporters and sentries on the battlefield... but he didn't pay for the privilege, so he's probably doing it with his flies open and his shoes undone. When he's having this much fun though, can you really begrudge him? The answer is yes. Even if you're on the other team, sometimes it just gets... sad. Luckily, there are other engineers on hand, like...

Practical Problems



An epic war between two professionals who know what they're doing, but don't know when to quit. A little parable about the importance of good manners, respect, and most importantly, not ****ing with another man's sandvich. A true Lesson For The Ages, with some fine music right alongside.



Meet The Soldier (Directed By Michael Bay)



We're firmly back in parody territory for this one; a relatively straight replay of Meet The Soldier, but with rather more boom and a surprising (though not unwelcome) lack of Alyx, Zoey, Rochelle or Chell forcibly being draped over a motorbike or anything at any point to complete the picture of one of cinema's most successful nostalgia murderers. Love or hate it, it's better than Transformers 2 any day.

The First Wave



It's not just a game mode... it's war! Mann vs. Machine gets dramatic in this epic four minutes of the mercs facing their durable doubles for the first time. Bonus points for a return of the disembodied Blue Spy, and a death scene with the power to spawn a thousand bits of erotic TF2 fan-fiction. Which exist. You'd better believe they exist. You have been warned.

DOTA Hero Pals: The Mysterious Ticking Noise



Not so much a 'parody' of the Potter Puppet Pals original as a straight copy with DOTA characters in it, this is still one of the more accomplished movies to come from that game. We just need another eighty or so instalments to cover the other characters, and I see no reason new players shouldn't have enough data to compete at professional level/troll like champions.

Heavy Doo, Where Are You?



I never understood "Scooby Doo, Where Are You?" as a show title. Admittedly my memory is a little fuzzy about the actual cartoons, but I definitely remember Fred, Daphne and Velma doing most of the mystery-solving gruntwork, with Scooby's role being to blunder into helpful things. If you called him, you'd prevent him from doing that. The song makes no sense, is what I'm saying. This movie is more reasonable. If you had to fight Old Man Peterson, having a Gatling wielding Russian psychopath on hand definitely beats anything Scrappy Doo could serve up. Admittedly, so would a crouton.

After Aperture



Chell's life after Aperture isn't exactly unexplored territory, but this Exile Vilify backed slice is one of the more interestingly melancholic SFM movies so far. A little clunky in terms of animation, largely due to the poor Chell rig (at least one other movie opted to reskin Zoey instead of using it), but it makes up for it with a different kind of atmosphere to most and that lovely outdoor setting.

Those are our picks, but there are many more SFM movies out there. Have any particularly caught your attention, impressed you, or just made you laugh? Share their names below...

The Steam Workshop is coming to Left 4 Dead 2. That'll make it even easier for players to sample user created campaigns, but Valve are planning to take things a bit further and release an "expanded scripting tool" that will let modders create "deeper and more varied experiences inside of Left 4 Dead 2." That includes new rule sets that can be integrated into new campaigns, or traded as custom mutations through the workshop.

"To compliment the new access to maps, weapons, and items, we are also creating an expanded scripting tool to allow deeper and more varied experiences inside of Left 4 Dead 2," say the Left 4 Dead team on the Left 4 Dead 2 blog, though no further details are provided. Perhaps this'll take the form of an auto-update with a community spotlighted mutation of the week, but who knows. It might integrate a Spitter into your lounge for all I can guess. I really hope it doesn't do that.

The news heralds a change in this week's official mutation to a fresh one called Follow the Liter, which will only let survivors salvage a single can at any one time. This ought to focus the action a bit on those scattershot Scavenge mode maps.

Update: Oh yes, these bonus features are planned "also for Linux users as well starting in the middle of next month and rolling out from there." Woot!