You can have instant monster wall art for free! Caveat Emptor: The quality of the finished product is only as good as your printer specifications and your patience with the assembly. If your style is very polished and proper, you might move along, but for those of you who would rather have things look cozy and homemade, check out the uniquely named Rasterbator...

The Rasterbator converts any image into a large, printable wall poster.

Choose your image, crop and resize if necessary, and the Rasterbator will create a multi-page PDF file. The all that's left to do is print out the gridded 'puzzle pieces' and get working on assembling your monster wall art.