Entirely black. To the point of being unable to tell where you are or the position of anything around you, except through touch. To test for this state one generally swings his/her hand in front of their face, about a 1/2 inch from the tip of their nose. If you can't see it, it's pitch black. You also tend to tell by hitting yourself with your hand in the process. This either means you're buzzed, or its pitch black.

Also a sci-fi flick released in 2000, which drew rather negative reviews, and flopped in the box office. Another blatant attempt to make Aliens with new alien fodder characters and aliens with a slightly different body structure (but they're still black, duh!).