OK I finished only Star Wars. But after checking doubleofive's galery http://picasaweb.google.com/doubleofive/StarWarsSpecialEditionChangesHD I found many changes which I never noticed before. So basically the finished version is a hybrid, which features no CGI additions, Greedo doesn't shoot, Jabba doesn't appear etc. but still has reworked laser blasts, new skies, etc.
But I definitely plan to get back to it and re-work it again :)