This might not be the best thing to watch before passing out for the night (Damn you Metafilter!) but this dubbing of Lionel Richie's Hello is absurdly hysterical until the very end when it gets totally creepy. Warning: YMMV (Your mileage may vary) with this video.
[youtube=http://uk.youtube.com/watch?v=Gg_z9v-4KuQ]