Rin-ne by Rumiko Takahashi. There should be lots of volumes out by now, but as of 08/05/2014, I only have 1-4. Reminds me of Urusei Yatsura, but more folklore magic than aliens explaining weird events.
THE UNLIMITED Hyobu Kyosuke A breeze flutters the lovely silver hair atop the head of a young man wearing a uniform so black, it seems to be mourning something. His name is Hyoubu Kyousuke. He commands the criminal esper organization PANDRA and continues to soar on midnight black wings through the dark sky, going so far as to start a revolution for the sake of his brethren who share his psychic powers. Fight back against the fate of time itself, and set infinity loose!
Gatchaman Crowds I can't stress how much I love this one. Explores social issues in an entertaining way. The main protagonist is very original and refreshing. One of my favorites that I have enjoyed watching more than once.