html5 is the next  generation of web programming it content many apis can turn the web page into full interact application like session, web, local  storage web workers geolocation , offline apps , dragdrop , and many more
and one of new tags that html5 deliver is CANVAS , is like space you can interact with every pixel as you wish with 2d drawing and it will contain 3d soon with hardware acceleration
i get to you tonight the most 20 shocking html5 canvas application i hope you enjoy it

Sketchpad

by Michael Deal

Color Cycling

by Joe Huckaby

L-System Turtle Fractal Renderer

Threshold Filter

by hitode909

Reflections

by Jean d’Arc

3D Planet Viewer

by Chris Adams

Water Ripple

by Almer Thie

HTML5 Love

Cloudkick

by Cloudkick Viz

Liquid Particles

by Daniel Puhe

Lucid Chart

by Ben Dilts

AJAX ANSI Player

by Meph

Canvas Sphere

by Emil Korngold

Dynamic Image Collage

by Berry de Vos (aka RadicalFX)

jTenoriOn

by Joshua Koo

Music Visualization

Tiler 3D

by Ibon Tolosana

iGrapher

3D OBJ Viewer

by Toxicgonzo

The Wilderness Downtown

by google labs