If Youtube videos do not play reload the page, that's a Youtube bug.
Or maybe now, a few years later, it's a new bug ;-)

My Gold Mask - Violet Eyes (Baryshnikov Eyes In The Forest Remix)

Aphex Twin - 4

SoKo - I'll kill her

Buraka Som Sistema - Hangover (BaBaBa)

Pixelord - Fish Touch (kidkanevil Remix)