Lately I've been playing with Windows Video Editor, a free program that's sort of a free, Windows version of iMovie.
It's not even in the same league of most of the consumer video editors we work with here at Muvipix, but it's a big improvement over the old Windows MovieMaker and it's good for people who just want or need a basic, easy-to-use editor.
I made a free 6-part tutorial series on it, if you're interested.