Last night, I couldn't find the dining room light switch. I literally had to go to the living room to turn that light on so I could see to find the dining room switch. We have lived in our house for 5 years.
Additional Information (added 12/13/2011): Told my husband this last night. He did the same thing. We blame the Christmas trees that have recently been added to our dining room. They have yet to defend themselves.