Actually it's not quite as cool as some of her other stuff, because it's neither original nor especially distinct from the original song (perhaps they did _too_ good a job covering it?) but it's still pretty good.
And since i apparently didn't link it the first time it showed up, on a related note, here is the Game of Thrones opening, "sung" by a cat :)
On this one i really wish he'd captured more than one meow. I'm not demanding that he convince the cat to actually meow in all the appropriate notes, i can accept the auto-tuning, but watching the same second of video playing over and over and over is kind of sad. Oh, and if you really prefer dogs to cats, there's a dog version too: http://www.youtube.com/watch?v=N02amlMkVJw
And not quite last but definitely least, some guy decided to make a dorky Last Unicorn music video. I don't have a problem with dorkiness per se, but that's pretty much all this video has going for it. (Though i dunno, maybe nerdy girls find this guy cute in the same way i'll often find dorky girls doing nerdy stuff on the internets cute?)
But in any case, it did cause me to look up the _actual_ Last Unicorn song on YouTube, complete with the prototype for Studio Ghibli's Nausicaa tapestry opening, so here you go :)