Weird stuff is happening to me... Help!

So in game, I cannot see other players models… Really weird!

http://img145.imageshack.us/img145/7818/garrysmodhelp.png

I have Half Life 2, Ep1 and Ep2 mounted! He is a regular combine! I have no idea why I cannot see him!?!

Also, If i walk into a wall I go though it a bit. I can see through it. Odd, very odd…

Edit: NPCs and ragdolls spawn and I can see them…