Well Yeah.
I dragged out 51st State (the card game) and scattered the cards about as 'inspiration' for both me and the players. Once someone took hold of an image on a card it really did work its way into play. Either through moves, or setting up for moves.
They do give a certain 'feel' to the game, since they are all by the same artist (I think), but the gritty, sombre feel is what we were going for. I think all apocalyptic imagery has the potential to influence the game's aesthetic in this way, so I can't see why a scrapbook of images wouldn't do just as well.
Now that I think of it, a AW scrapbook, with all the maps, NPC sketches, and various ephemera generated through play collated into one giant scrapbook? Wicked. That's happening from now on :)