http://www.mangahere.com/manga/onepunch_man/

I have been harping on this manga all day.
It is gut bustingly funny.
I haven't laughed this hard in a long time.

It's basically about this hero guy that is too ridiculously strong.
He wins all of his fights with one punch.
It has great characters, and while the manga looks top notch, it doesn't take itself seriously at all.

Go read it.
Go read it right now.
aaaaaaaaaaaaaaa