He was 91 and, tragically, was hit by 2 cars while crossing a street in LA (Venice Boulevard, I believe).
I remember him from game shows and from an appearance on the original Twilight Zone. Apparently, per the article, he was also blacklisted for a short period of time, and frolicked around the country in a hippie stage for a while there. He was also the father-in-law of Andrew Breitbart.
His poor wife, actress Alley Mills, saw it all and I hope that lady finds some peace. How awful.