About Ben Burtt's book The Sounds of Star Wars at Celebration V:
"(the book) includes all of the growling and snarling recorded for the reptilian bounty hunter, Bossk, most of which was not used in The Empire Strikes Back."
This is one I'd like to hear, and it would be perfect that its quality is really good, so sounds could be used for our edits!! :D
You can find the whole article here: http://www.starwars.com/vault/books/sounds_of_sw_c5/index.html