http://www.davidpaulseymour.com/index.html
Check out this artists site that includes some pretty awesome work. It has a very 'California' vibe to it, but they are based out of Minneapolis. Everything they produce is "green", made in the good 'ol USofA and has a funky modern vibe to it.
Their prints would look great in a kids playroom, teenager's bedroom, or heck, anyone who just loves really cool stuff (Have I ever mentioned my collection of license plates, road signs, and VW hubcaps?!)
I like their take on midcentury modernism;
"Our aesthetic for design is tied closely to midcentury modernism because we believe that never before or since in American history was the optimism, social fabric and genius of
creativity so strong, forward-thinking and the envy of the rest of the world. Part of our greater underlying mission as a company is a renaissance of this spirit."