Guy writes little songs based on whatever you request, mostly for free. Already over 300 songs. I think "Hasselhoff" takes the cake, but also noteworthy:
SONG #0166: JIBBERISH FREESTYLE WHAT WHAT
please freestyle. except in jibberish.
SONG #0258: PLEASE PLAY THE KEYBOARD AS FAST AS YOU CAN
PLEASE PLAY THE KEYBOARD AS FAST AS YOU CAN
SONG #0032: GEOMETRY IS THE NEW CALCULUS
Please make a song about the results of when a Geometry text book and an Overhead Ceiling fan met and became the best of friends. The results can be anything you want, but it has to be in the style of a heavy metal song and the results have to include a family reunion in Canada.
....please include a Llama somewhere in the song.