Post DCAU
Batman: Under the Red Hood
Superman vs The Elite
Wonder Woman
Green Lantern: First Flight
{Training Day in Space}
Justice League: Gods and Monsters
{An Original Timm Elseworlds}
Justice League: Crisis on Two Earths
Justice League Dark
Justice League: Flashpoint Paradox
{TheFlash centric}
The Dark Knight Returns - Pt 1/Pt 2
Superman/Shazam!: The Return of Black Adam
{featuring Superman}
Green Lantern: Emerald Knights
{GL Corps anthology}
Justice League: The New Frontier
Justice League: War
Teen Titans: The Judas Contract
Batman: Assault on Arkham
{Suicide Squad centric}{based off the Arkham games}
Batman and Harley Quinn
{featuring the Plant People}{DCAU}
Justice League: Doom
Batman vs Robin
{Damian/Talon centric}
Justice League vs Teen Titans
{Raven - Damian story}{Superman subplot}
Superman: Doomsday
Superman/Batman: Public Enemies
Superman/Batman: Apocalypse

Batman: Year One
{Gordon/Wayne split story}
All-Star Superman
Batman: Bad Blood
{Batman Inc (Batwoman/Grayson Bats/Batwing/Damian) - Batman MIA}
Batman: Gotham Knight
{Batm"animatrix"}
(substantial gap) <just going by release date now
Superman: Unbound

Son of Batman
{Damian centric}
Justice League: Throne of Atlantis
{Aquaman/JL split story}
Batman: The Killing Joke
{Batgirl prologue}
Haven't gotten around to most of the DCAU flicks, but
Mask of the Phantasm would certainly be high up there
Rated G/PG assortment
Lego DC Comics Super Heroes: Justice League vs. Bizarro League
Lego DC Comics Super Heroes: Justice League: Cosmic Clash
Lego DC Comics Super Heroes: Justice League: Gotham City Breakout
Batman Unlimited: Mechs vs. Mutants
{GA/TheFlash/Damian}
Batman: Return of the Caped Crusaders
{Batman '66 animated revival}
JLA Adventures: Trapped in Time
{Super Friends featuring Karate Kid and Dawnstar}
Batman Unlimited: Monster Mayhem
{GA/Cyborg/Grayson/Tim}
(substantial gap)
Batman Unlimited: Animal Instincts
{GA/TheFlash/Grayson/Tim}