Will Rogers' USA, on PBS
IMDb; Wikipedia

Apparently this first aired in 1972, but I must have seen it in the late 80's or early 90's. (I saw it on PBS, but I don't really know if that was the original network to air it.) It was just James Whitmore, up on stage by himself, playing Will Rogers, just basically reciting some of Will's writings or whatever. I dunno. It was funny as hell. I had it on tape, but either I lost it or it degraded or something. That's a shame. I hope I can get another copy of it someday.