Well i don't particularly have nicknames for the characters, but i do have way of referring to them so everyone will know who they are (ie stupid people
) and also nicknames for some of the cast.
So, the way i refer to them infront of the uninformed:
Frodo, the one with the Ring
Sam, the one with him
Aragorn, the one who is King
Gandalf, the one with the big hat
Gimli, the one with the axe
Legolas, the one who shoots things
Merry and Pippin, the other hobbits
Boromir, the one with the shield who got shot
Arwen, the one that looks like a horse in the movie
Sauron, the baddie
And then the actor's nicknames:
Beanie (Sean Bean)
Kelley (Sir Ian McKellen)
ChrisLee (soon to be Sir Christopher Lee)
VIggo or The Vig (pronunciation on the first half)
HUGO (in a loud forceful voice) and
The Fantastic Orlando (if you've seen Ned Kelly you'll know why)