Kdenlive is a free and open source video editor for Linux. Its goal is flexibility and ease of use. Kdenlive supports major video formats and 4:3 or 16:9 aspect ratios. It is licensed under the GNU general public license version 2. The latest stable release is 0.76 as of October 8, 2009. There are many audio and video effects ranging from volume adjustment to video blurring. Check out Kdenlive for yourself at their website.