To offer up a real answer: most of the Fallout 2 crew including Chris Avellone and Feargus Urquhart make up Obsidian Entertainment.
Jason Anderson, the designer of FO1's interface, game world, and engine, is the creative director of an undisclosed MMO for Interplay. Almost certainly the fallout MMO they've mentioned before.
Tim Cain, the lead programmer of FO1, is working as design director of an MMO being developed by Carbine Studios for NCSoft.
Leonard Boyarsky, the art director of FO1, is the lead world designer for Diablo III over at Blizzard Entertainment.