I fkin' love that comic, lol.
One Piece, Bakuman, Gantz, Shaman King (and anything by Hiroyoki Takei), YuYuHakusho, and Naruto.
Lots of webcomics which I will not name. Also, I will not name any mangas since everyone here probably knows the popular ones anyways.
Aquaman in DC's New 52 is extremely funny but awesome, too. I like the new Nightwing and Supergirl. Others, not so much.
Eh. Mouse Guard and Maus were two comic series I liked. And Watchmen. Also, the French Asterix and Obelix books. We3 was also good. Madame Mirage. Ooh, and THE LAST UNICORN.
Currently I'm trying to finish reading Arrowsmith. Issues are frickin' hard to find.
A friend collects the Asterix and Obelix books. Are pretty rad.
I'm also enjoying the last incarnation of Power Girl before the relaunch. Because of the, ahem, witty dialogue and unexpectedly extremely funny humor in just about every issue. I'm serious!
Edit: Some examples to prove my point, before anyone disputes it.
- The Sandman
- Spawn - The Dark Ages
- V For Vendetta
- Sin City
- Kick Ass
- Scott Pilgrim vs The World
those are my favorite comics EVER!!!