1) I somehow managed to open the bathroom door on my head.
2) During a post-Doctor Who fight with the GC over the TV remote (I wanted to watch EastEnders, he didn't), I managed to fall off the sofa, land on the coffee table, and bugger my shoulder for the next few days. I still wasn't allowed to watch EastEnders.
3) I slipped over in the shower, old lady style.
I think the first was possibly my most spectacularly stupid injury of 2009. My life basically tends to be an endless montage of the first ten minutes of an episode of Casualty.