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 ;-)

Mense Reents - This is the Way

Rob Dougan - Clubbed to Death

Wildchild - Renegade Master '98 (Fatboy Slim Old Skool Mix)

The All Seeing I - Beat Goes On

DJ Krush - Duality (feat. DJ Shadow)