Okay, as I mentioned tomorrow is Twelfth Night http://groupthink.jezebel.com/tomorrow-is-tw… and I've thought of a Muppet cast.

Viola: This would be the "human" part
Orsino: Link Hogthrob
Olivia: Miss Piggy
Sebastian: Kermit
Malvolio: Sam The Eagle
Maria: Hilda (the costume lady)
Sir Toby Belch: Gonzo
Sir Andrew Aguecheek: Rizzo
Feste: Fozzie
Fabian: Rowlf!
Antonio: Robin?
Valentine and Curio: Statler and Waldorf

What do you think?