Luke Skywalker: James Franco

Han Solo: Gene Wilder (Charlie and Chocolate factory GW)

Chewy: Shaq (Kazaam, and maybe a wookie dunk contest)

Leia: Kristen Stewart (we've cornered the tween market)

Lando:Robert Downey Jr. (Tropic Thunder style)

Boba Fett: Temuera Morrison

Vader: James Earl Jones (Voice) & Gerard Butler (Suit)

Palpatine: Revive Leslie Nielsen and have him play palpatine

and comedy ensues

Ole Obiwan: Cary Ewles

Just for fun PT

Qui Gon: Liam Neeson for sure

Obiwan: Ewan McGregor

Darth Maul: Ray Park

Jar Jar: Not cast in movie; instead, replaced with Dave Chappelle who is a human and not a terrible Jar Jar.

Anakin: That spaz from "incredibly loud and up close" or whatever it's called

-or Herschel Walker (former Cowboys Running back)

Padme: (Natalie Portman)

Dooku: not cast, Darth Maul lives. Dooku was stupid.

Jango Fett: Temuera Morrison

Mace Windu: Samuel L. Jackson

Grievious: The Madison Square Garden