Minitube : Youtube Desktop Client for Linux

Minitube is a native YouTube client. With it, you can watch YouTube videos in a new way: you type a keyword, and Minitube gives you an endless video stream. Minitube does not require the Flash Player. It is not about cloning the original YouTube Web interface, but strives to create a new TV-like experience.

Installation:
OpenSuSe user can use "1-click" installer to install minitube - here

Ubuntu users needs to download .deb package from getdeb
Now you should be having minitube_0.8.1-1~getdeb1_i386.deb file install this .deb file using the following command: sudo dpkg -i minitube_0.8.1-1~getdeb1_i386.deb

The interface is clean and simple. You're greeted with a simple search box upon first launching Minitube. Enter your query, and results are displayed in a column. They'll automatically play one after another,