Lorenzo @ Atareao.es has created an Unity video lens and a YouTube scope for it, which lets you easily search and even play YouTube videos in either an external player (and thus, without using Adobe Flash) or your web browser.
The latest YouTube scope for Unity Video Lens comes with a tool which lets you select the external player you want to use for playing YouTube videos and it currently supports yviewer, VLC, Minitube (you'll need the latest 1.7 version) or your default web browser.
By default, the YouTube scope for Unity Video Lens search doesn't seem to work too good and it displays unrelated results, at least that was the case in my test. However, this can be fixed by selecting "Relevance" under "Order" in the lens filter.
To install Unity Video Lens and YouTube scope in Ubuntu 11.10 Oneiric Ocelot, use the commands below:
sudo add-apt-repository ppa:atareao/lenses sudo apt-get update sudo apt-get install lens-video scope-youtube
To select the default player, search for "scope-youtube-configurator" in Dash.
via atareao.es; thanks to Jorge Ortega for the tip!