For several years I had a very pleasant exchange of notes, cards, poems, and naughty limericks with the late Isaac Asimov. (But so did several hundred other people; the man was not only a remarkably quick wit, but a very fast typist.) I also had a nice correspondence in the 1980s with Spider Robinson, who wrote the wonderful "Callahan's Crosstime Saloon" and its many sequels. A pun-loving gal like me could do no better.
My Great Aunt, Mary McDougal Axelson, was a screenwriter in Hollywood during the 1930s, and every now and then I see her name on an old black-and-white film, as the credits roll at the end. One night Turner Classic Television showed two of her movies ("Life Begins" and "A Child is Born" back-to-back, and although I was initially delighted, by the end of the evening I was almost bored to death. Some of the weepy "women's pictures" from that era are really bad, I'm sorry to say, and knowing that one's own relative wrote that pap is not enough to make it entertaining.
I grew up as a neighbour and schoolmate of Mary Kay Place, whose best-known screen role was in "The Big Chill." Mary Kay, as a character actress and comedienne, has managed to avoid becoming "Hollywoodish." She is still a smart and wacky gal with a great, raunchy sense of humour, and it's a pleasure to go out for a beer with her when she comes back to Tulsa for a visit.
The only other celebrity-type persons I've had personal contact with were the classical pianist Van Cliburn (had a lunch date with him, thanks to the connections of my Great Aunt Mary,) and the late, great Harry S Truman, who shook hands with me during a Girl Scout honour ceremony in Independence, Missouri. I didn't wash my hand for a week.