The ones I'm currently reading:
I stopped reading The Walking Dead a while back because the writer seems to have run out of ideas about how to carry forward the story. The first 70 or so issues were brilliant though. Now, I prefer Sweet Tooth as my post-apo fix.
Others that are worth mentioned are Preacher (just about anything by Garth Ennis is worth reading) and Hellblazer.
Among manga, these two are my all time favorites. If anyone has any other to recommend, I'm listening.
Inachu Ping Pong Club. Furuya's other stuff, Himizu, Green Hill and Ciguatera are worth reading too.
Shamo is another one I like, not much of a story but the fight scenes are pretty nice. Hideo Yamamoto (Kuroshiya Ichi, Homunculus), Jiro Matsumoto (Freesia, Keep On Vibrating) and Naoki Urasawa(Monster, 20th Century Boys) are decent too.