Here is my reading list, divided by runs/events/graphic novels.
Runs
Swamp Thing v2 #1-64
Superman, Man of Steel-Triangle Era
Wonder Woman (George Perez)
The Question (Dennis O’Neil)
Doom Patrol, v2
JL/JLI/JLA #1-50
Doctor Fate, v2
Green Arrow (Mike Grell)
Animal Man (Grant Morrison)
JLE #1-50
The Spectre (1992)
The Flash (Mark Waid, Geoff Johns)
Aquaman (Peter David)
JLA
JSA (Geoff Johns)
Wonder Woman (Jimenez)
The Spectre (2001)
Martian Manhunter (Ostrander)
Nightwing v2 #1-70
Young Justice
Wonder Woman (Rucka)
Gotham Central
Formerly Known as the Justice League
Superman/Batman #1-87
Plastic Man (Kyle Baker)
Teen Titans (Geoff Johns)
Green Lantern v4 (Geoff Johns)
Green Lantern Corps (Peter Tomasi)
Wonder Woman (Gail Simone)
Booster Gold (2007)
Batman – Grant Morrison
Batman – Paul Dini
The Flash – Rebirth
Zatanna (Paul Dini)
Events
Crisis on Infinite Earths
Zero Hour
Identity Crisis
Infinite Crisis
52
Final Crisis
Blackest Night
Brightest Day
Flashpoint
Graphic Novels
Batman: Year One
Batman: Long Halloween
Batman: Dark Victory
Batgirl: Year One
JLA: Year One
Green Arrow: The Wonder Year
Killing Joke
Death in the Family
Cosmic Odyssey
Batman: Lonely Place of Dying
Death/Return of Superman
Knightfall Saga
Kingdom Come
The World’s Greatest Super Heroes
JLA: Midsummer Nightmare
JLA: The Nail
JLA: New Frontier
The Power of Shazam
A Superman for All Seasons
No Man’s Land – Complete
Bruce Wayne: Murderer/Fugitive
Batman: Hush
Batman: Under the Red Hood
The Dark Knight Returns
Superman – Red Son
Justice
All Star Superman
Luthor
The Flash: Fastest Man Alive
Batman: Black Mirror
Flashpoint – Beyond
A Thinker in Space 