Regular wallpaper is such a bitch to put up, and painting is so blah. Plus, both are expensive. Sharpies cost $5-10 and come in tons of colors. Too bad using them requires some artistic talent, something Charlie Kratzer has that I do not.
One thing painting and wallpaper have over sharpies is that they take a weekend to do, this took longer. However, sharpie requires no moving/covering of furniture in the room, just work around it.
It does remind me of what i want to do with my margin drawings, put them together on a grand scale on my wall! Only they will be less artistic, more deathly, more stick-figurely, and made in pencil, oh well.