Here's one for the OOF...
When I came home last night after a few days at Jessie's house, I tried to turn on the front hall lights. Nothing. I flipped the switch for the porch lights outside. Nothing. I took a glance at a clock on the same circuit. Black. Sometime in my four day absence -- with all appliances turned off -- one of my breakers tripped. What the hell? This goes along with the fact that my outside motion light comes on whenever I turn off a seperate switch in the kitchen.
It's a little early in home ownership to drop a lot of money... but a rewire is starting to seem like a good idea.