Comet Cursor is online software that can change the look and feel of your mouse's cursor. According to their website:
Fun Cursors gives you free animated cursors and icons for almost any theme on the Web. Our huge library of cursor skins includes Peanuts, Dilbert, Pokemon, South Park, DragonBall Z, dogs, cats, anime, sports, and more.
Sometimes the uninstall is not successful because some key file was manually deleted that the uninstall process needs. In these cases, you should go to http://www.cometcursor.com and reinstall it, and then proceed with a normal uninstall shown above.