Looking for a video editor on your linux box? Here is the best one. OpenShotVideoEditor is just awesome!, stable and does all that you need.

Installing OpenShot is quite simple as it comes with a custom PPA:

Here are the details of this PPA (Detailed Instructions):

deb http://ppa.launchpad.net/jonoomph/openshot-edge/ubuntu karmic main
deb-src http://ppa.launchpad.net/jonoomph/openshot-edge/ubuntu karmic main

Signing key: 1024R/EDFBD1F9

See the video demonstration what you can do with Openshot :

So, go ahead Install and see how it works. For those who are good at creating video’s please let me know if you can contribute some time creating awareness videos.