For art I use mainly Photoshop CS now. Some of my older art ones on YouTube I use Flash MX as well.

For screen recording I use CamStudio now to capture my stuff but that may change if I find something that does better without making the files as big.

Gaming, I have an emulator for the Lion King that allows me to play Nintendo games. For Inherit the Earth (and most other older games I will do) I use ScummVM to run it.
LOL Not sure which video you saw so I thought I would answer for just about everything I do on there. (Editing is done with multiple programs. Mostly Windows Movie Maker but I did have another much better one I used in the past but I am not sure if any of those ones are on YouTube or not.

)