Fun, Free Google Chrome Apps.?

Uh, so i have google chrome and you know how you can install harmless apps off of it. Well so far I have graffiti, cargo bridge, thwack, and mr. bounce. what are some other fun ones? Help me pleasee!|||Angry Birds! Youtube Herotopia...... many more if you click the add tab button above the url adress you will find a buton to the free app store C:|||Angry Birds!