Quote Originally Posted by Lee View Post
Fraps is very processor intensive but yields very good results.

Camtasia is a bit harder to use, is a bit less processor intensive (still intensive, just a bit less so) and yields good results.

I know fraps likes to drop frames when it's breaking it's video files. (after about 4gb it starts a new recording, in playback there is no break, but you notice it when playing.)
If you have seriously fast harddrives it doesn't do that (not noticeably anyhow, and I'm talking RAID0 Caviar Black type fast )

There's also the option of Xfire, and FRAPS can have the settings turned down to be less intensive IIRC. It's been a while since I've done any of this though tbh
I know Steam recently added screenshots, not sure if they added any sort of video functionality at all though =/