Online drawing and animating tools

Drawing

http://caimansys.com/painter/

http://mrdoob.com/projects/harmony/

http://harmony.uphero.com/#sketchy

http://www.lostconnection.net/harmonykmod/

http://projects.stroep.nl/findClosest/

http://www.zefrank.com/scribbler/

http://mugtug.com/sketchpad/

http://sketch.odopod.com/

Animation:

http://www.doink.com