MSI Afterburner Beta is superior to Fraps in almost every way, IMO. This program is free, easy to set up, easy to use, light on system resources, and most importantly of all... it's free.
Note that the program is still in development and newer versions are released regularly, so I don't expect that download link to be good for more than a few weeks. I always have to search for the latest version when the old one expires.
I know both Freycinet and myself use MSI Afterburner.