From Eva Baskins:
Since this is a show theme song, I’m not sure if it counts, but… Rocket Robin Hood! This feels like something that could have a filk following, just because the concept opens up so many questions! (I’ll admit, I’ve never actually watched it, and I only just now found out the thing existed.)
…can’t say I’ve ever heard of it either, but MAN what a concept. And now if I had to explain filk to someone without using any actual filk music…I might just show them this.