I may have gotten a little carried away with these... but I kept thinking, "Oh, I can't leave so-and-so out! And I can't leave what's-her-name out!" I promise you that these are all characters that have lines and names and are in more than one scene -- I didn't do anyone obscure like Theodred or Sam's Gaffer.
Also, I do not use any character more than once... except one. That character looks vastly different in various sections of the trilogy, and goes by different names, and I'm going to stop here because you already know who I'm talking about, I'm sure.
Post your guesses in the comments below. This is on the honor system -- no cheating and peeking to see what other people guessed ahead of you! Might want to grab a piece of paper to write your guesses down on so you don't have to keep scrolling up and down. I'll post the answers on Friday.