I like infographics a lot. Someday my walls may be covered in them. I've been reading a bit about how various people make them. ...In short it comes down to getting and learning to use Illustrator, which is expensive and has a long learning curve for true expertise.
There are some really good freeware pseudo-Illustrator ports, and there's no time to start learning like the present... and it'll keep my mind off of my exciting governmental office treasure hunt tomorrow.