To get more specific on Shadowfax: he'd be Lamborghini Contash ("Contash" is spelled wrong, isn't it?). On a similar vein, Asfaloth is a Delorean DMC-12; not quite as flashy or fast as a Lamborghini, but just as cool.
The Nine are agents for the RIAA, cracking down on the hobbits for illegally burning a copy of the One Disc.
Elrond is a proponent of organic foods and farming.
Tom Bombadil is Johnny Depp (odd, does whatever the futz he wants, lives in a nice little out-of-the-way place with his beautiful singer wife).
Maeggaladiel: Brilliant!
