invisibleman is a collaborative art blog where you’ll find a variety of art: drawings, paintings, sketches, cartoons, graphic design, illustrations and photographs, in a variety of media: pen, pencil, oil, watercolor, acrylic, print and digital, on a variety of surfaces: Moleskine pages, paper, canvas, posters, billboards, guitars and who knows what else, by a group of artists (image above, top row): Paul Antonson, James Antonson, Kurt Dietrich, (bottom row) Barbara Zuckerman, Kerry O’Neill and Jon Keegan.
There are links on the left to their individual sites in addition to the archives of their work on the invisibleman blog.
Note the wonderfully subtle Flash animation at the top of the page.