The voice actor for The Overseer in the original Fallout has recently died as RPGcodex reports;
American actor Kenneth Mars, who voiced the Vault 13 Overseer in the original Fallout, died from pancreatic cancer on February 12, 2011 at the age of 75.
Mars was best known for his roles in several Mel Brooks films, including the insane Nazi playwright Franz Liebkind in 1968's The Producers, and Police Inspector Hans Wilhelm Fredrich Kemp in 1974's Young Frankenstein. Aside from Fallout, his voice work is most remembered for his role of Ariel's father King Triton in Disney's animated feature The Little Mermaid.
I actually saw his name on TV with his death and some clips of him but never realized he was the dude who did the voice over, amazing how the old video games had steller voicing acting cast.