Okay... See, I hate this solely for the fact that I don't know what to say... (joking) I like them all, though I wish Sauron and maybe Gandalf were up there too. That being said, Galadriel kicks the actress version's butt. I will say that I prefer Viggo Mortensen as Aragorn. Though your drawing is still... Ummm, is "Beast" too soft of a compliment?
Awesome work, I think my favorite part about these sketches (Aside from the human on the top right, I'm stupid for scruffy guys,) is the fact that, if you unfocus your eyes they look almost fully rendered.
And yet, if you try and pick up the detail you can see all the pen-strokes, and rough lines that make up the portraits as a whole.