Ask HN: What was your one hit wonder?

I recently was browsing a friends very old and outdated personnel website and ran across links to a video he created in the early days of Youtube/Google Video that had gone viral (Digg, Reddit, TV interviews, newspaper mentions, etc). So I'm curious, what have you done that maybe hasn't resulted in financial independence but is (or would have been at the time) recognizable to the 'internet' public at large?