There's a British panel show I'm addicted to (QI), and one of the frequent guests in its earlier seasons was American comedian Rich Hall. I always thought that he looked strikingly similar to Moe Szyslak but just chalked it up to coincidence.
After years of wondering, I finally bothered to look up who Moe was actually based on. Lo and behold, it's Rich Hall.
So, I guess it's less "today I learned" and more "today I confirmed my random theory".
If like me you went through all qi episodes multiple times and are itching for more like a junkie jonesing for a fix, the Qi elves' podcast - there's no such thing as a fish - is also excellent!!