This is my first post in this thread. i've waited for calmer times to give my insight on this.
I've always thought a JLA movie would be almost impossible to make but the F/X effects have evolved quickly and since I saw the transformers movie with those incredible F/x effects, I believe its conceivable to have a Jla movie.
George Miller as the director? as long as he respects the characters, I'm fine with him.
Tom Welling as Superman for this movie? it would be a dream come true!!!

...but...but until I see an official statement from the WB, declaring Tom is signed for the Superman in the JLA movie, I'll remain skeptical.
...but I'll ask AgentPat to sacrifice some chickens for me...
Tom already plays the character in Smallville, is not afraid of typecast so he is definately my top choice for Superman.
I've always felt a JLA movie would be a starting point to come up with spin-off movies with the other characters whose projects have become stalled: Flash, WonderWoman, among others but seeing these boards, it shows they actually not just one Jla movie, but possibly two or three movies.
TW as Superman in two or three movies as Superman? Ok people, it's KO...lol
I'll definately watch this movie but if Tom enters in the movie as Superman, I'll able on the first day exhibition in a theater near me.
BTW, just throwing a suggestion for Batman: instead of Ryan Gosling, I'll point to Jonathan Rhys Meyers.
Peace.