Camtasia is great. I use it and it's perfect. It comes with a trial version for 30 days and there are no watermarks. You can also record audio with it. Hypercam is another one but it has a stupid "unregistered hypercam version" watermark on the trial version. There is also one at planetgamecam.com but Camtasia is great for me. Camtasia for the win!