Iris V1.1.9 (now discontinued.... but still available online) will load the both Mobile Facebook and Facebook Lite Youtube videos in a new tab and play them in the iris browser.
It is a shame that Blackberry bought the software as it was starting to look like a promising product. Hope someone can use the source code
http://code.staikos.net/cgi-bin/gitweb.cgi and make some changes to optimize it for HTC devices.