Kdenlive is a great, full featured, video editor. I am not a professional video editor, but every time I want to do something (more advanced than just cutting or re-compressing video), Kdenlive has the feature to do it. Fading between tracks, check. Compositing multiple streams together, check. Adding all forms of graphics over video, check. …and a ton more too.
FLOSSing for lent 27/40