Here's a LINK to a long, funny, and well-illustrated commentary on the aesthetic evolution of Gamma World through its various editions. It was written by a German cartoonist named Jared von Heinmen. This article is well worth a few minutes to read. It is especially enlightening for people like me who never felt a particular compulsion to peruse post-1983 versions of GW.
kesher at the OD&D forum just brought this to my attention. I'm not sure when it was originally posted - presumably some time within the last year.