How do you take a video of your screen? What program?

CamStudio
Works great and is free.

Although I’ve never tried it, I would assume you could use the screen recording feature in QuickTime.

Assuming you sue Windows (you mentioned games) and want to make videos of your leetness, I would suggest FRAPS or Xfire.

What Aqua said!!!!!

Well you said games, so I’m assuming you don’t want suggestions for mac.

Fraps, as @the100thmonkey said is good, but it records at a high quality by default and can really eat up HD space if you’re not careful. I haven’t used Xfire, but if you’re looking to upload online you might want to consider Livestream’s Procaster software, which is free and fairly nonintrusive when playing games.

Smart recorder.

how do you use fraps ?