Since the first Star Wars movie came out when I was a child, I've grown up knowing what Chewbacca looked like. The most jarring images that we saw at the "Star Wars and the Power of Costume" exhibit at the Denver Art Museum were some of the early concept art of Chewbacca.
In this story board, Chewbacca looks a lot like Sully from Monsters Inc. Plus, he's sporting Vulcan-like ears.
Below, Chewbacca looks a little like a long-haired Ewok.
However, the Chewbacca that we've grown to love was also present.