Bearding the lion in his Lehrer

Once again, while looking for something else, I stumbled across a whole bunch of rare videos of Tom Lehrer performing for a live audience in the sixties. While I probably own everything that Tom Lehrer recorded, eagerly attended Tom Foolery, and got the Resident Fan Boy a Tom Lehrer sheet music collection for his birthday some years ago, I have never actually seen Tom Lehrer perform. He's a mathematician and disappears for decades at a time. While it's difficult to choose (and there don't seem to videos of my very favourites), here are two near the top of my list. The first one nearly got us thrown out of my late father-in-law's living room when the Resident Fan Boy and I insisted on warbling it at the family piano after Sunday lunch. (Sunday lunches at my in-laws had that effect on me, Tom Lehrer or no.):

And while we're on the subject of Sunday:
He's rather cute, isn't he?