Check this out: Someone on Youtube laid the audio of Vanilla Ice's "Ice Ice Baby" on the video to Justin Timberlake's "My Love" and it is freaky how much the video is in sync to the song. Keep in mind that apart from shortening T.I.'s part in the video, there has been absolutely no editing to match the video to the song. It actually matched like this naturally. I'm serious. Something tells me Justin is a closet Vanilla Ice fan. (embedding was disabled by request) http://www.youtube.com/watch?v=WiWTuv3vkJ0
There are definitely certain parts where the dancing matches the beat of "Ice Ice Baby," but for the most part, it doesn't really match. Like Chris said, you've got to use a lot of imagination here.