There's an issue with Left 4 Dead that makes the game black with glowing, trailing icons ( L4D Tips & Tricks ). That page says it was fixed for Radeon cards...
I have Left 4 Dead 2, and it's still broken. I think it's because my Macbook has an Intel x3100 GPU, which might not support it!
Team Fortress 2 looks to have this trouble too, but only when i'm underwater (which'd turn on the full screen effect).
In L4D2, turning off mat_postprocess_enable 0 stops the black-screen issue, but then the game can't be played online, runs at 4FPS (even with no zombies around), and the shadows are weird colours! (TF2 runs at an alright speed: is it less demanding?)
This YouTube Video says that it can be fixed by setting the graphics card to Software Vertex Processing Mode. Unfortunately, this requires the Intel Display Management Tool, which is only available for Windows.
...I don't really have an ending for this topic, it's more of an info dump on my problem right now.
