ProxTube Unblocks US-Only YouTube Videos for International Users

" ...ProxTube is essentially an extension that automatically routes your YouTube traffic through a proxy server in the US, so YouTube thinks you're visiting the site from a US location. It's not unlike our method of watching the BBC player from another country, it just automates the process for you. Just install it and start browsing YouTube ..."
Source: LifeHacker

 ProxTube Unblocks US-Only YouTube Videos for International Users