Visually intriguing, useful and a great weekly/monthly/yearly reference, the taschen planner series are stunners for the art enthusiasts.

I'm picky about my planners, and this has been the only one to make it past a month of use. I think it's mainly because each week a new full bleed image is opposite your calendar. After my 2008 one is done, I'll definitely be framing some of the images and putting them all over my place. My personal favorite is the celestial maps, but this circus one certainly peaks my interests! (via Taschen books)

I love unusual planners and this one looks really unique - have to see if I can get my hands on one - I have heaps of planners, they all get used for some purpose but my favourite is my day to day one.