The fact that I have such a problem that people... that that has to, you know, be on people's mind, what my personal background is. To me, to be very frank with you, is a totally irrelevant thing.

In 1993 Klemperer reprised the role of Klink in an episode of The Simpsons as Homer's guardian angel and spirit guide in the episode "The Last Temptation of Homer" (episode # 5. He had a younger sister named Lotte (1923–2003). but who is the author of this material?" In addition to the character's bumblings Klink was also remembered for his horribly screechy violin playing spoofing Klemperer's talent for the violin.

Born in Cologne Klemperer and his family fled Germany in 1935. The series aired for six seasons with Klemperer receiving a Primetime Emmy Award for Outstanding Supporting Actor in a Comedy Series nomination for each year winning the award in 1968 and 1969. Klemperer appeared in several films and numerous guest starring roles during the 1950s and 1960s.