The first wall planter I ever laid eyes on was a woolly pocket (pictured above and below). I saw it a few years ago and fell in love. I loved it's unique and subtle design while still managing to pack a pretty dramatic punch-who expects to see plants hanging from the wall in such a lovely manner? I've thought about them on and off since (but have yet to purchase one). A friend recently got the urbio system and my interests have been renewed.
(all images come from the linked sites)