I didn't like the voices, the animation style, the storyline, and the fact that Superman dies and is cloned by Lex.
Didn't care for Justice League: The New Frontier either.
The DC Animated movies that I like are:
Superman vs. The Elite Justice League: Doom Justice League: Crisis on Two Earths Superman: Doomsday Wonder Woman Green Lantern: First Flight Superman/Batman: Apocalypse Batman: Under the Red Hood
Superman/Batman: Public Enemies was decent.
-- "I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use." - Galileo