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 ;-)

Tom Waits - Alice

Rachel Grimes - Transverse Plane Vertical

Colin Stetson - The stars in his head (Dark Lights Remix)

Kimmo Pohjonen & Jeffrey Zeigler - Live @ Pier 15 (NYC LMCC River to River Festival)

Antti Paalanen - Kraftsman