I limited my list to one per author or else it would all be stuff by Grant Morrison or Alan Moore.

1 - Animal Man

Written by Grant Morrison
Art by Chaz Truog et al.
2 - Watchmen

Written by Alan Moore
Art by Dave Gibbons
3 - New Gods

By Jack Kirby
4 - DC: The New Frontier

By Darwyn Cooke
5 - The Dark Knight Returns

By Frank Miller (& Klaus Janson)
6 - Justice League of America

Written by Gardner Fox
Art by Mike Sekowsky
7 - Identity Crisis

Written by Brad Meltzer
Art by Rags Morales
8 - Jack Kirby: The Epic Life of the King of Comics

By Tom Scioli
9 - Green Lantern: Rebirth

Written by Geoff Johns
Art by Ethan Van Sciver
10 - Superman & Batman: World's Funnest

Written by Evan Dorkin
Art by Dave Gibbons et al.