let's see, someone already mentioned Soul Eater and Fairy Tail...
...damn. Cannot really think of anything.
OH! it's a farcry but try Rookies. It's probably the only baseball manga i've ever been able to tolerate! It literally rocks!
i know it's sports.. but the story is based upon dreams and encouraging others to follow them. Also the concept of comrades and being a team (Nakama) are very important.
funny as hell too.
Maybe i'm like waaay off, but i just love that series