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 ;-)

Caravan Palace - Comics

Ummet Ozcan & WAR - Low Rider

Caravan Palace - Mighty (feat. JFTH)

Major Upset & Frank London's Klezmer Brass Allstars - Brass Attack

Boogie Belgique - Jungle Law