Now here's a genius idea somebody had. I think I heard one of these songs a long while ago, and thought it was brilliant. Today I tripped over an entire site full of 'em.
What the fine folks at Dictionaraoke have come up with is the blend of karaoke music with the mechanical hilarity that is the computer voice of online dictionary pronunciations. So head on over and check out the wealth of musical comedy at Dictionaraoke. You'll be glad you did.