I love a good genre hopping cover version, and for a while Richard Cheese was really the top act. It's surprising he put out as many albums as he did without huge quality dips.
Probably the genres he parodied were such easy targets. To this day his version of "People=shit" is my favourite Slipknot song, because just being able to decipher the lyrics makes it ridiculous in itself. No rewriting needed there.