Here's a quick review of Content Samurai - the new video making software from the Noble Samurai people. It's designed to make slick, simple videos quickly and easily without having to learn complicated editing software.
I think it's worth the investment especially if you it regularly to produce lots of videos. It's a bit expensive for just one off videos though. The reality is that any of these video making software online programs is only worth it if you use it extensively. The advantage of Content Samurai is that there is virtually zero learning curve and you can produce a slick video slideshow in a few minutes after signing on.
It's well worth trying out, but be warned that it's very much designed to be simple to use and it doesn't have the advanced editing options that other video making software has like Camtasia.