Batman: Hush
Like Knightfall, Hush allows a host of figures from Batman's shadowy past resurface to attack and plot against him. Jeph Loeb penned this story arc as a "greatest hits" from Jim Lee. The plot is simple, a new criminal, going by the name of Hush, is causing mayhem in Gotham and roping most of the Bat's nemesis' into a plot which is intended to bring about the demise of hero. It is fast paced, thrilling and touching all at once.
Honourable Mentions: Batman: Whatever Happened to the Caped Crusader? by Neil Gaiman and Andy Kubert, Batman: Cacophony by Kevin Smith and Walt Flanagan and Batman: Mad Love by Bruce Timm and Paul Dini.