While most of the stuff on Advertising for Peanuts is advertising related, I also like to highlight smart thinking and interesting ideas in general. Like this 3-D representation of the Photoshop interface, for example, with hanging dialogue boxes within a lit box - done by hippocrit.com.
How cool would it be to use this same idea for outdoor advertising. If you suspended the Photoshop dialogue boxes in the sky or in front of a scenic view - it would appear like reality was being photoshopped. You wouldn't need a headline or tag - it's brilliant.
Click the image to see a very cool physical representation of a scroll bar. You can get more info on these images and see others at Information Aesthetics