Yes... but hard when you remember the good stuff, too. They're both part of the same person. I guess it's just what comes out for real when the stakes are high/chips are down, etc. You see what someone is truly made of and whether they're who you thought they were or not. I like Michelle's analogy of them being possessed by aliens. Some days that seems to fit for some of us.
When the men on the chessboard Get up and tell you where to go; And you've just had some kind of mushroom And your mind is moving slow; Go ask Alice... I think she'll know.