This is of course the work of illustrator Paul Blow. I first came across Paul's work at the
Pick me up exhibition at Somerset house. Paul's work is often witty and humorous but nearly always touches on deeper subject matter- which works as a perfect taster for topics that are usually too dark for imagery.
However, don't let me tell you that his work needs text to justify it as you can see from examples on his site or in his beautiful prints, Paul is able to express the intention behind the pieces clearly using only simple visual tools (perhaps best illustrated in his piece on Internet pornography). These elements form your intellectual stimulant but far from being a one trick pony his use of color and line make a decent aesthetic impression too.
feast your eyes on Paul's goodie bag here: http://www.paulblow.com/