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 ;-)

Hundred Waters - Thistle

Virtual Boy - Doom

Terranova feat. Billie Ray Martin - Make Me Feel

Asa, With Joyful Lips & Stumbleine - Forgotten, Francoise, Leave The Light On Remix

Berry Weight Ft. Astrid Engberg - Equations