I am the YellowTarget, might be something else next week :p
For my older videos I used Fraps but it can really tank your framerate even on a good computer.
Dxtory is the recorder I'm currently using, its fast and very configurable
http://dxtory.com/v2-home-en.htmlThe default codecs are lossless and make huge files that require harddrives with fast write-speeds, that game was 111GB to record.
Sweet thing is that Dxtory can take other codecs like this one
http://sourceforge.net/projects/x264vfw/ and this will compress it on the fly to h264. I would still recommend recording at a high quality then re-compressing for youtube uploads but it will makes the files much smaller for storage ~3-4gb a game
I might make a little tut on how if interested