A DC comics post, eh? Yes, I am just as surprised as you by this, but it is 2013 I suppose. With the persuasion of my DC loving roommate, I took a chance with the new 52 and didn't hate it so much.
One of the most accessible comic lines in DC is hands down, Batman. A character that everyone is familiar with, the Dark Knight's new 52 line seems to be one of the more paramount and character driven lines. And albeit Batman is the leading lady, it's his epic cross over event, 'Death of the Family that has captivated me more than anything. Death of the Family is a nod to the 1988 story arc a Death in the Family, in which the Joker murdered Robin (Jason Todd).
The Joker has finally resurfaced and it seems this time he's playing for keeps. Joker personally attacks each member of the Bat-family in his own demented way. The death of the family story arc covers multiple comic lines including: Batman, Batgirl, Nightwing (my personal fav), Catwoman (my all time DC fav), Batman and Robin, Red Hood, Suicide Squad and the Teen Titans all of which are allies of the Bat.
I won't get into details, but our favorite clown has quite a few tricks up his sleeve, a different one for each of the supporting Bat member cast, and with the issues I've read recently I'm already stressing out about these cliff hangers. I personally haven't caught up with the Batgirl story arc, but I hear it's emotionally intense and a great read, given her old ties with the Joker which makes for a great read. It's here that the reader gets to see how infatuated Joker is with our favorite anti-hero, and how great of lengths he'll go to have him all to himself. Talk about a twisted love story!
I think conceptually the 23 issue event is brilliant. I still have more issues to pick up, but it's been a while since a comic has kept me on the edge of my seat like this story arc. My personal fav happens to be the Nightwing issues. The story arc isn't fair, and it most certainly isnt for the faint of heart, but it's an epic read. Check it out if you want a comic that shakes things up a bit!