In the end he was a mess. I remember him from my childhood for wine commercials and the Muppet Movie.
A friend of mine, a serious film buff, remembers his first day in L.A., driving down La Brea and seeing Orson Welles, in a motorized wheelchair with and oxygen tank and a toy poodle on his lap, sitting in front of Pink's Hot Dogs, stuffing a messy chili dog into his mouth.
Another friend of mine, a screenwriter, owned the house Welles died in until a couple years ago. He used to throw some amazing parties there.