This application responds to the position of the mouse and moves parts accordingly. Other body parts of the monkey then respond to these parts moving and thus creates a very interesting, disjointed type movement. 
This application: http://www.openprocessing.org/visuals/?visualID=11752 is very simple just consisting of a moving dot which follows the position of the mouse. It looks like an eyeball. I like that it stays within the eyeball itself and doesn't move out and this is why I find this interesting. 
http://www.openprocessing.org/visuals/?visualID=6482 is an application which kept me busy for a while. This is because it wants me to 'blow the fish up'. When the mouse moves over the image it dissolves into particles which whip around. I wanted to make the whole fish dissolve and tried to move my mouse around as fast as possible to make this happen. The graphics weren't very good but the idea behind the game was. 
http://www.openprocessing.org/visuals/?visualID=11100 This application is called 'Cursor Thief' and it is very cute. A small creature chases your mouse around and tried to steal it. When it does your mouse disappears from the application screen and the creature emits a heart then takes your cursor off screen before it starts again. I like that this application is very simple but you want to do it over and over and over again. 

























