Here's an interesting article that I spotted tonight:
Which transformation scenes would you add to their list?
Here are two of my initial reactions to the article:
>"Barrymore played Hyde less as an ape-like barbarian and more like a rodent."
This seems relatively true to the original novel, in which Mr. Hyde was described as scrawny and smaller than Dr. Jekyll. I also recall that the vampire character in "Nosferatu" resembled a rodent more than a bat.
>"The result was a savage, Neanderthal-like appearance that has influenced every version of Hyde."
Similarly, the 1931 appearance of Boris Karloff has influenced every subsequent version of Frankenstein's monster. Few recall that the original "Frankenstein" never described the unnamed creature as especially ugly.