Well, not really.
But about Boromir, the movie did help to change my view on him. I read the books a year or two before the movies. When I read them, Boromir seemed like a real, plain bastard to me ( but then again, I was still in the 'oh-I-love-the-fantastic-elves-so-much!'-stage ).
Sean Beans portrayal of him changed my view forever. Why, I don't really know. I think it's the emotion that he gives to the character. I didn't just viewed him as a 'soldier who wanted the Ring', but perhaps that has to do with the knowledge that I have from the books.
When I read the books again, while waiting for TT, Boromir seemed like a different man to me. That's why humans ( with Boromir on the first place! ) are now my favourite races in ME.
I won't even start about Faramir, 'cause I wouldn't be able to stop ranting...
I never really liked Sam in the movies, don't know why. Perhaps because I didn't like Frodo. But that PJ made Frodo send Sam away in ROTK!!!
I agree with you on Gimli. But remember, in TT, during the battle of Helm's Deep. That battle was so loathed with tension; I can't tell how good it was to be able to laugh, even if it was about Gimli...
About Aragorn, also: no comment...
Well, these are my two cents...
Love,
Aethelwine.