I just added Kamcord video recording and sharing to my new game Arrow Mania 2 and thought I'd share. You end up with a video recorder in your game so players can review or share their gameplay videos on YouTube/Facebook/etc.
Check out Arrow Mania 2's Kamcord page here: http://kamcord.com/games/arrow-mania-2-archery-shooting-game/
Made a quick blog post with some code so you can add it to your own projects, see here:
Just a Cocos2D-X to ObjC wrapper so you can control KamCord in your C++ code with calls like: