Shadix, your brother sounds like a bit of a bore. It may be that he has highly developed sensibilities and would make a fine film critic. But people get to choose whether or not they care to read a particular critic's newspaper column. Your brother is a tyrant, imposing his perspective on you, as if you don't have a right to an opinion of your own. It's nice that you can appreciate his good points, despite how overbearing he is. He's lucky to have you as a brother. How well do his critiques go outside of the family circle? Does he have friends? Do they all think like him?

You would actually be helping him, as well as yourself, if you were to start backing him off a bit, when he makes his pronouncements on what is and isn't admirable. He probably, genuinely does not realize how flat out rude he is. If you think your otherwise decent relationship with him could survive it, consider sitting down with him and gently suggesting to him that he goes too far in holding forth his own opinions as the only valid ones . . . and that it puts people off, you being one of them. You could say you admire how much thought he puts into analyzing things, but that it gets tiresome to listen to after a while.

In your own mind, you need to give him a little less credit. Part of the intimidation you feel is coming from your own insecurity. That instinct he has to be a know-it-all is not going to play well with everyone everywhere he goes. As time goes by, you'll probably see where it gets him into some difficulties. He lacks finesse. He may well be above average smart, but his speaking style reveals a lack of education. How far did he go in school? What you're describing is generally regarded as a form of ignorance.