For example a fairly common one, which I am definitely guilty of, is Leslie Nielson and Steve Martin. I've never gone so far as to confuse them in conversation, but in my head I often get the two iconic white-haired comedy actors mixed up. Bill Pullman and Bill Paxton are notorious for being thought one is the other as well. Perhaps it's just me, but if I'm not paying too much attention I'll occasionally confuse Liam Neeson and Jeff Bridges. What are some other common actor mix ups, or perhaps ones that are just unique to you?