I'm a little dubious about John Lithgow as Yoda, but we'll see...
He does a damn fine job IMO.
Jenny, what you said about putting on the headphones and curling up in bed and listening every night, I did exactly that just a few months ago. Two episodes a night while lying in bed. Star Wars, Empire & Jedi. It is great to experience a little Theatre of the Mind, especially when it is Star Wars!