Watashi Baka
Man this mangaka just makes the cutest, sweetest mangas, no matter if they're boys' love, girls' love, or straight love :)
Tsubasa: Reservoir Chronicle
Oh man... Words are not enough to describe how awesome this manga is... It's got it all, funny, sad, love, action, drama, adventure, tragedy, everything. I watched the show many years ago and even though I tried really hard to get everything related to it (including xxxHOLIC), there was a lot that didn't make sense, or I never quite understood. Now that I read the manga I've come to understand all the stuff I wasn't clear on; I feel like I can truly appreciate the story and all its underlying nuances. It also helps that I've immersed in more of the CLAMP universes :D
Butakai Ouji To 100 Kai No Kiss
Oh man, I remember reading this storytale when I was a kid!! It was definitely one of my favourites, I remember wanting to know how the nightingale sounded like... The art might be strange, but I really, really love the fact that they adapted this into a manga.
Tsubasa - World Chronicle - Niraikanai Hen
Again, CLAMP doesn't fail to deliver heart wrenching stories that make you cry one minute and the next have you smiling.
Dear
After being in 2 different books (one of them with 2 separate parts), this story came to an end. I really liked how they tied the whole thing in Purino's speech, how these people from incredibly different backgrounds (and some would say even species!) all interacted with each other and they made bonds and influenced each other. Truly a great story.
From Aiu Station On The Hiragana Line