I grew up listening to Bill Cosby records, I always loved his humor (Chicken heart, so funny). Lately, the few times I have heard him speak he seemed more like a grumpy old man. As far as the allegations, it's not looking too good for him. I wondered why these women didn't speak up sooner, but I guess it's hard to make accusations like that against a powerful person, especially if you don't know he attacked others.
You don't see a bunch of people rushing to his defence and saying he couldn't have done it, and his refusal to talk about it seems strange too. My gut says there is something to this.