Hi yaauldgoat,
That's one funky bookcase! Your use of wallpaper adds real character to the piece. It reminds me of a revamped staircase by Dublin-based design blogger, Shawna Scott (see pic below).
If you're interested, click on the link below and scroll down to the bottom of the page for the full story.
http://www.designindublin.com/2008_05_01_archive.html