Personality wise, I'm probably most like Eowyn. I've been a tomboy for years now, though I can't ride a horse and killing a Witch King would do me much more damage. She was probably one of my favorite female characters in LOTR though.
Another one I'd love to play would be Pippin. In the books and the movie he's a general clown, and thus gets to do some really funny things. Also, in the movies at least (It's been so long since I've read the books

) he gets to sing! I love singing, though I'd have to sing his parts up an octave at least I imagine.
Long ago...I did dress up as Frodo for my birthday and went to the mall via a city bus.