I've seen very VERY few movies where the effects are stunning enough to overshadow flat and even WTF moments in script, but this is one of them.
If you don't have a large screen, find someone who does and buy this DVD. I haven't been this impressed by advances in visual effects for almost a decade. The blending of Puppetry and CGI quite frankly blew Lucas out of the water.
Yeah, that market scene is the new Mos Eisley cantina scene.