In most cases, I can easily separate a person's personal life from who they are up on the screen (or stage). But in AJ's case, I have such fundamental disagreements with so many of the things she has said and done, I have lost my "separate-ability." So, for myself, I decided it's just better to stay away. I don't read about her (gossip or serious interviews or anything else) and I won't watch her in movies.
That's interesting! I have a pretty good separatability, too. I can watch Tom Cruise, for example, with no problem. The only actor I can think of who I might draw the line with is Mel Gibson. Though if Mel were in a really good movie (which he hasn't been, IMO, in quite a while), it's possible I might go see him. My moral standards in this area are pretty lax

-- either that, or where movies is concerned, I got no resistance.
Now, my husband has a long list of actors he refuses to see in a movie -- many of them seemingly innocent people. Cher, Julia Roberts, Bruce Willis ... if anyone has ever annoyed him on a talk show or something, that's it for that person. Though I probably could talk him into seeing something if it was really really good.
How about the rest of you? What actor(s)/ess(es) do you refuse to go see?