because the characters in lotr are mythological-type characters, u know, like the bad guy and the hero and the mentor (i.e. gandalf), etc.
they may have done an excellent job portraying the characters they r spose to, but its not seen as being in the same category as dramatic "real people" roles, with "modern" problems and not legendary-type problems.
gollum did get some kind of recognition, though didnt he? (i.e. best special effects or somthin like that last year?) thats kind of a nod to serkis, i think.
the main reason i can see is that their characters were spread out over 3 films. And the oscars can only nominate movies from last year/this year. You need a full character to nominate and none of the ROTK actors played full characters.
I understand why McKellan got a nom in LOTR, cause his character had a begining and an end ( remember he supposedly DIES in Moria).
It's such an ensemble piece that, if everyone here took a vote on who should be nominated, who could it possibly be? There's Elijah, Viggo, Ian - for supporting? There's Daisy, Sean Astin, Serkis, and many more, we wouldn't know who to chose, and there would be alot of bickering and whining so I'm just happy with them just getting the Golden Globe for Outstanding Cast Performance in an Ensemble Piece. 🙂
I just concur that it would be rather difficult to decide "which" character should play the lead role, Frodo is supposed to be the main character but the form of the movie itself suggests otherwise. Along with that there aren't really any awards given that would accommodate such a large cast as some of you point out.