This video is one of the funniest tings I've seen in ages:

https://www.youtube.com/watch?v=_li_d_YviZ4

And it got me thinking what other videos would be very, very funny if you took all of the music out of them (but kept the actual sounds people made actually filming it), or would seem really strange - especially to someone who'd never seen the video with the video before.

I was thinking 'True Faith' by New Order but that's spoiled by the band actually singing in it - it's funnier if no one appears to be singing anything.