Left 4 Dead 2 Cinematic Trailer Leaked

A Left 4 Dead 2 cinematic trailer has leaked upon the internets, spotted by Evil Avatar and Shacknews. And you'll maybe not fall out of your chair in shock to learn: it's a bit good. It's below.

Clearly as a leak this isn't the high quality version Valve would want us to be seeing first, but it's good enough, and it's damned funny. And super-gross. Man, the bit with the chainsaw. It's a clever balance of threatening zombie movie themes and well timed humour. Less slapstick than the TF2 animations, more focused on the severity of the situation and the humour that's born out of that. Have a look for yourself: