For any enthusiast of Pollock's particular style of painting there's a neat flash site by London based artist Miltos Manetas (original design by Stamen) which encourages the frustrated artist in us all to vent and create a drip-style masterpiece!Tips: Click the space bar or enter button to erase your drawing and the mouse to change the color of your brush.
Link via Manetas' site
Plus, some people probably didn't catch it the first time around!
http://www.mrpicassohead.com/create.html