I have worked with several commercial offerings including Final Cut Pro, Premiere and Video Wave. I recently used Cinelera (on Ubuntu Hardy) on several projects and I like it very much. Cinelera is much more powerful than Video Wave and is more near the class of Final Cut Pro and Premiere. Sure, Cinelera has some stability issues from time to time but they are not major and it also recovers nicely since it saves your most recent changes anyway. To be fair, I have seen similar stability issues with the commercial products as well so I do not find this aspect of Cinelera any different.
Not knowing what you need it to do, it is hard to comment but it is very easy to use just for movies. You just open up the track you need and position it on the timeline thingy. You then put the next track on the next line. You can then add blends or whatever you want and you can edit each track right there in the viewer. When you are done just render it out. It is true that this bit of blender is just a small bit in a very big program but if you focus on just this little bit you can learn it in a few minutes.
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