Here is Tom Lehrer, one of the funny voices I heard a lot while I was growing up (my parents were big fans), singing A Christmas Carol, a still-apt poke at the true meaning of the season: money.
I included a cover of this song for our annual Christmas mixtape ... sung by Daniel Radcliffe, no less. (And, it's probably worth noting, the rest of the cast of How To Succeed in Business WIthout Really Trying; the tune appeared this year on the annual Broadway Cares fundraiser for AIDS relief.)
Radcliffe is actually a fan of Lehrer, and has demonstrated this notably in a Graham Norton episode on the BBC in which he raced through Lehrer's The Elements. The YouTube clip has been seen well over two million times ... with the Harry Potter fans probably squeaking by the Lehrer fan base, I would imagine!