Thanks Ann. They put him on that Aricept so hopefully that helps for a while.
I have a lot of mixed feelings about this. For one he was very abusive to me and my mother when I was a kid which i did forgive him for. I do love my Dad. He's the only Dad I ever had. It's just weird how life is. Someday, in the near future he'll forget all the mean things he ever done and the scary, sad thing is that he'll forget who i am.