Recommend me some manga, please?

I have been meaning to catch up with and expand my manga collection, and I wanted some options for the next time I go out and buy some! ^_^
I have already read/seen as an anime (these are just my main favorites):
-Yotsuba&! (manga)
-Puella Magi Madoka Magica (manga/anime)
-Toradora! (anime)
-Five Centimeters Per Second (manga)
-Azumanga Daioh (manga)
-Nichijou (anime)

I buy my manga from my local Barnes and Noble (sometimes off the site, too) so if you know already that the store has it in stock, that would be helpful as well. Thanks for looking!