Tim Cain, one of the creators of the original 1991 Fallout, has joined Fallout: New Vegas developer Obsidian as senior programmer.
Cain was formerly design director at Carbine Studios, an MMOG developer currently working on Wildstar for NCsoft, and co-founded Troika games in 1998, which released RPGs Arcanum: Of Steamworks and Magick Obscura, The Temple Of Elemental Evil and Vampire: The Masquerade - Bloodlines.
Source: Gamesindustry.biz