Ooh, Zombie!dreams! I had one of those once. :/ Not fun. Fortunately it was set in a completely different place to my bedroom, so once I was awake it was fine. That's the thing with the spiders - there's always the possibility they're real... Still, zombies are by nature slow-moving and stupid, so if they do turn up you can make good your escape.

Yowchie. I hope you didn't hit anything on the way down. For me, the worst thing about it is losing those three seconds between vertical and horizontal. I hate being out of the loop for even that long. I would freak out beyond belief if Torchwood ever retconned me. (Which would probably help me work on breaking it, to be honest, but still.)