Casting

Mike Myers as Shrek
Eddie Murphy as Donkey
Cameron Diaz as Princess Fiona
Antonio Banderas as Puss in Boots
Julie Andrews as Queen Lillian
John Cleese as King Harold
Rupert Everett as Prince Charming
Eric Idle as Merlin
Justin Timberlake as Arthur Pendragon
Conrad Vernon as Gingerbread Man / Rumpelstiltskin / Headless Horseman
Cody Cameron as Pinocchio / Three Pigs / Ogre Baby / Bohort
Larry King as Doris, the ugly stepsister (except UK)
Jonathan Ross as Doris, the ugly stepsister (UK only)
Amy Poehler as Snow White
Megan Hilty as The Singing voice of Snow White
Maya Rudolph as Rapunzel
Amy Sedaris as Cinderella
Aron Warner as Big Bad Wolf
Cheri Oteri as Sleeping Beauty/Actress
Regis Philbin as Mabel the Ugly Stepsister
Ian McShane as Captain Hook
Susan Blakeslee as Wicked Queen
Mark Valley as Cyclops
John Krasinski as Sir Lancelot
Andrew Birch as Evil Tree #1
Christopher Knights as Three Blind Mice / Heckler / Evil Tree #2 / Guard #2
Chris Miller as Stromboli / Announcer / Mascot / Singing Villain
Tom Kane as Guard #1
Seth Rogen as Ship Captain
Kari Wahlgren as Old Lady