According to the guy who does movie reviews on our local radio station, the screening he went to saw people realizing 20 minutes in how bad it was, and went MST3K on it. Yelling jokes, booing lines, and basically pissing all over it.
He recommended renting it when it comes out and have friends over for beers to ridicule it.
Since Donald Faison will always be Turk from Scrubs for me, all I could think is how much cooler this movie would look if the whole cast were there with him. Dr. Cox would mock the aliens, JD would be frightened of them, and somehow none of them could do anything to the Janitor.
It's a fairly faithful adaptation of the second Jeph Loeb Superman/Batman story arc. If you liked Public Enemies and can't get enough of Tim Daly and Kevin Conroy reprising their DCAU roles, you'll love this.