BTW a 1998 performance of Tom Lehrer performing his Poisoning Pigeons song can be seen in the retail (non-PBS versions, which are shorter) videotape / DVD of the Cameron Macintosh tribute HEY, MR. PRODUCER!. His original performance that night also included an updated version of Who's Next? (India and Pakistan were both doing nuclear testing at the time), but this did not make it to the videotape / DVD).