Yotsuba!
I just bought Yotsuba&! 4. It's been forever since volume 3 came out but I'm obsessive about checking the manga shelves at the bookstore and this time it paid off. I had no idea another volume was due out and was therefore very pleasantly surprised. It's by the author of Azumanga Daioh, which I love, so let me pressure you to jump on author Kiyohiko Azuma's bandwagon and buy a copy today. Seriously, go now.