I work nights and usually leave work around 3 am. I stayed up fiddling with photos on the computer for a couple hours after work the other day. When I finally got to bed, I flipped back the covers and THIS was in my bed. It was roughly three feet long (give or take a few inches) and about as big around as one of my fingers (in other words a very small snake). I let out a shriek and flew in one direction and the snake went as fast as it could in the other and tried to hide on the floor behind the bed.
I felt sorry for it afterward - it found what it thought was a nice dark safe place to hide and suddenly there was this big shrieking monster flashing bright lights in its face. It just wanted to get as far away from me as it could. Mom & Dad came over and trapped it under a plastic bucket. I called the apartment's answering service and they sent a guy over. I was kind of hoping he would just toss it over the fence out back into the woods, but he came back after a couple of minutes and told us he had killed it.
I looked up some snake information online later and it seems to have been something harmless and inoffensive - still not sure what. It looks a lot like the photos I'm finding of corn snakes and rat snakes, but as I said, I'm not as informed about snakes as I'd like to be.