Way too much stuff.
Some of it is a hangover from moving from a flat with lots of cupboards to a house with only one - there's stuff that has been in the garage since we moved in and never seen the light of day. We don't have a car so it isn't that easy to get rid of stuff.
I do regularly send things to charity but when I do the OH seems to replace it, especially books and DVDs. Still, now we both have Kindles and iPods with an iPod dock on the way I'm hoping we can start to reverse the process.
Trouble is we need an electrical inspection and some rewiring. I just dread to think how much crap we'll have to move to get it done.