MakeUseOf has a nifty tutorial about how to make a 20 x 20 meter poster using Rasterbator. You just upload a picture, download Rasterbator, let it work its mojo, and you get a big, good quality, rasterized picture to hang on your wall, that might look something like this:



So, it's kind of tile-y, but I think you could just assemble it better. Maybe that's why the guy in the picture is praying, for someone with more patience to install it correctly. Seriously, what is he doing and why? Other than showing us the size differential for the pic. Is he pretending to be scared of the men in the poster? I sure hope not because that would be incredibly cheesy and I don't have any crackers on me. Overall it would just be a more compelling shot if he looked more enthusiastic, and less like a hunger striker.

Oh yeah, MakeUseOf has like 9 other Rasterbator-like sites on this handy list as well, for more of your photo-manipulation needs and desires, but some of them are not that great.