Jack Nicolson. He's been my favorite actor as far back as I can remember.
Some others that I will see a movie totally based solely upon that actor being in the movie would be Ian McKellan, Patrick Stewart, Hugh Laurie, Kathy Bates, John Lithgow and a few others. I tend to like directors more than actors much of the time.
Ones I hate:
Russell Crowe. I will not watch any movie that dickwad is in. In fact, if Alfred Hitchcock's zombie rose from the grave to direct one more movie and cast Russell Crowe in it, it would be the only Hitch movie I will never see. That is the depth of which I cannot stand Russell Crowe.
Russell Brand. He is annoying even to listen to. He was on Stephen Colbert the other night and I had to change the channel while he was on because listening to his voice is like having my face grated on a cheese grater.
Matthew Perry. Has never read a funny line in his entire career. If I worked at ACME, I would drop pianos on his head all day long.
Kevin James. Not funny at all.
Tim Allen. EVERYTHING HE DOES IS EXACTLY THE SAME AND IF I HERE HIM FUCKING GRUNT ONE MORE TIME I WILL KILL HIM!!!!
Tom Cruise. I used to be a huge Tom Cruise fan, but all of his Scientology bullshit has really ruined how I look at him. Plus, he just makes awful films now IMO.