Shoutbox

I don't know if any of you have ever had them kind of games/screensavers that were like objects or charachters that moved around on your desktop.
I had little sheep on my laptop and i could drag them around and drop them and if i left them the would fall asleep or do funny things with the other sheep. Or you could left click them and use the commands. Point is i'm not sure of the name and i want to get some on my PC. I also remmber they kept appering more and more.