It's so true, Rahrah! I was dumbfounded many a time how I would be driving home thinking confidently that I was going to have a sober weekend, and then my car turns into the lot of the liquor store and I would be buying a BOX of wine. I felt like I was possessed sometimes, or had two personalities as you say.
I am chaining up my lunatic too!!
(Pink Floyd fan as well. ;-) )