It's all paint!
My FIL has a sign business. We found something with the wallpaper design on the internet and he recreated it in his sign program and cut it out of paint mask (like a big sticker) on his plotter (like a large printer, but using a blade instead of ink).
I painted the wall a dark green and then sponged it with a slightly lighter shade of green. You can kind of see that in the first photo. Then we put the stencils of the pattern on the wall and used flat black paint to create the design. I still have to paint about 10 eyes on each design in the pattern with glow in the dark paint. I am not looking forward to that, but you got to do what you got to do for your addiction...
That is the back wall of the office, which really only has 3 walls. We are finishing the basement and we didn't want to close the office off since we going to be in there a lot and will have to keep our eye on children. The 2 side wall we painted a tan color that matches the rest of the walls in the hall way. We thought all three walls with the dark HM "wallpaper" would be too much and make it too dark. Not to mention the time it took us to do just one wall. We have other HM stuff to hang on the side walls. My parents bought DH a large framed HM architechtural drawing for Christmas last year that will take up one wall and he has some HM posters and pictures we have taken over the past couple of years that will go on the other wall. The back wall that we worked so hard on will be covered up some with cabinets/work stations/desks. We haven't yet come to an agreement yet on that configuration along with the placement of his beloved HM action figures...
The whole basement is going to be our own little Disney World and escape from reality. On another thread I have posted pictures of our bathroom that is next to the office. It is done in red/black/white Mickey theme. It also is not finished, but I just ordered the boarder for in there so hopefully that room will be done soon. We haven't started on the bar or family room areas yet but I have lots of ideas. If we would just quit taking trip to WDW we might be able to afford to finish this project!
Here is the link to the picture of the bathroom incase you want to see it. Post #30
http://www.disboards.com/showthread.php?t=1335710&page=2
BTW thanks for posting. I was begining to think I was alone on this board...
Sorry to ramble on.