I have an obsession about bookcases, this one is nicely ordered by colour. I have a folder on my desktop especially dedicated to studio/bookcase photographs (a little keen, i know), I find them interesting - I think its the grids and structure and then all the sections of colour from books that attracts me... and it also adds to my fantasy day dreaming of what my studio one day might look like.
Studio: http://okoloweb.cz/