Robin Williams has joined the list- actually he's been on it for a long time- of actors who have become unwatchable.

I have to say that I have enjoyed Robin Williams in the serious roles he has taken on of late. He makes a pretty good bad guy.

 Others:

Bruce Willis

I just watched Lucky # Sleven and I thought it was pretty decent. There was one little factor at the end that bothered me but I won't go into that for those who haven't seen it.