There is a gene named Sonic hedgehog. I'm serious.

http://en.wikipedia.org/wiki/Sonic_hedgehog

"Some clinicians and scientists criticize giving genes frivolous or quirky names, calling it inappropriate that patients with "a serious illness or disability are told that they or their child have a mutation in a gene such as Sonic hedgehog.""

Others:

* Zbtb7, a gene which was originally named Pokémon after the video game Pokémon
* Pikachurin, a retinal protein named after Pikachu