Creative Layout Ideas From 50 Beautiful Print and Digital Photo Collages
Femalt, Female Artist Festival / crazy eclectic poster design by Dough Rodas
Tom Henni - This is a great example of a designer being inspired by vernacular art. I will shortly be posting a video by Craig Oldham which discusses this in more detail (see also: Tibor Kalman & Undesign)
Chaos and Color: Poster Inspiration Board - Image 3