I'm not really a fan of machinima, but every once in a while something catches my eye. Ignis Solus is really unique short film that follows a lonely and rather bored pyro. I have to say, my favorite part is the music and the sense of emptiness and haunting it instills.
One of the things that really struck me was that not only does it show off a really well developed cinematic technique; it shows just how polished and fine tuned the animations in Team Fortress 2 are. In the middle of a game its easy to over look the animations and I find it really refreshing to be able to soak them in without taking a rocket to the face.
Theres a HD version on the Lit Fuse Films
site, and you can even download a rather large version.