Whats a good, free, video editor? See details?

All I can think of at the moment that I will need are 1. Audio editing (adding in music/sound, some effects like fading, good control over syncing it with the video...) 2. The ability to add other clips to the video (from a screen recording program usually) 3. Plenty of video editing options 4. Multiple file... show more All I can think of at the moment that I will need are
1. Audio editing (adding in music/sound, some effects like fading, good control over syncing it with the video...)
2. The ability to add other clips to the video (from a screen recording program usually)
3. Plenty of video editing options
4. Multiple file format support would be nice, but not necessary.

Thanks everyone
Update: Windows Movie Maker seems like it might work... anyone got feedback on it?
3 answers 3