Some of you probably have seen this already, but there's a great three-part interview with Tim Cain up on youtube. He discusses the original Fallout, Troika and two of their games and presents some thoughts on Fallout 3 and New Vegas. And gives a few hints on his MMO project. At any rate, it's a fun insight into the background of Fallout.
Part 1: http://www.youtube.com/watch?v=xgjd4i1o4UY
Part 2: http://www.youtube.com/watch?v=laq9ua5VjTs
Part 3: http://www.youtube.com/watch?v=m4XVW6qcuzM