Laying Down - Blur Effect

How do you make the player seem like he is laying down, like he has been knocked out, and how do you make the screen blur?

I have the same question.

I believe that Valve used camera entities for scenes like that. As for the blur effect, I think you’re looking for env_screeneffect.

http://halfwit-2.com/?page=tutorials&id=164

Tutorial on how it was done in Portal.