Admittedly - the way I FEEL about an actor does have some bearing on whether or not I PAY to see their movies.
I am for instance, DISGUSTED at Liam Neeson's railing against guns - when his entire career SO VERY MUCH depends on violent gun movies.
On the other hand, if it's FREE on cable, I'll probably watch it.
On the flip side, I LIKE certain actors enough that I will probably make an effort to see their movies regardless of genre, because I think they're just basically a good person. Actors like Gary Sinise come to mind, but also "actors" like John Cena as well, because he has done HUNDREDS of Make A Wish wishes.