It's also a joke in the TV show "Community": https://www.youtube.com/watch?v=HP1Atb8nAGY

... "directed by Anthony Russo".

I asked Claude if its logo choice was an intentional Vonnegut reference by Anthropic, would that be upsetting:

> If Anthropic intentionally referenced Vonnegut's irreverent artistic style, I wouldn't be bothered. After all, Vonnegut used humor and seemingly crude imagery to explore deep questions about humanity, consciousness, and free will - themes that are quite relevant to AI. It would be a rather clever literary reference.