Heh, we have a four bedroom house. When my Mom was alive, she and my dad used to come back to Winnipeg more frequently than just my dad does now. The fourth bedroom is in a lower level (it's a four level split) with a bathroom right beside - almost an in-law suite.
Since it hardly ever gets used, my wife decided (yes, it was her decision) to let me convert it to the computer/Star Wars room
I just need to stop buying crap long enough to be able to afford some shelving
Didn't help that I ordered some Tomy stuff today.