If not, well, its a series of direct-to-DVD movie projects that both DC Comics and producer Bruce Timm (Batman: The Animated Series, Justice League) have been releasing since 2007.
The movies they've made as of September 28, 2010 include...
-Superman: Doomsday -Justice League: The New Frontier -Batman: Gotham Knight -Wonder Woman -Green Lantern: First Flight -Superman/ Batman: Public Enemies -Justice League: Crisis on Two Earths -Batman: Under the Red Hood -Superman/ Batman: Apocalypse
...All of these films have recieved PG-13 ratings, and all of them have a general running time of approximately 75 to 80 minutes (with the exception of Gotham Knight, which consists of six animated shorts). ------ I'm planning on getting Batman: Gotham Knight and Wonder Woman sometime next month.
I never heard of these, and I've never been a big fan of superhero movies, but I see some in your list that look interesting. I'll try to find them, thanks for posting.
__________________
lllllAs of 2019 I have transitioned; My name is now Rei. Please don't deadname or misgender me, thank you. <3 lllll