Human faces are attractive and effective in every-day communication. In human-computer interaction, because of the lack of sufficient knowledge and appropriate tools to model and animate realistic 3D faces, 2D cartoon faces are feasible alternatives with the extra appeal of ‘beyond realism’ features. We discuss CharToon, an interactive system to design and animate 2D cartoon faces. We give illustrations (also movies on CD) of the expressive and artistic effects which can be produced. CharToon is fully implemented in Java, allows real-time animation on PCs and through the Web. It has been used with success by different types of users.