I gave it 4 stars. Phantasm got 5 stars and ROTJ got 4.5.
Nothing too terrible, nothing mind-blowingly incredible. There were some nice moments in it, and I thought that all of the replacement voice talent did an exceptionally nice job of making me not even realize that they were different. Even Stiers was acceptable as Penguin (still, I'd rather've had Williams.)
But man, that whole scene with Barbara was unnecessary. Cute, but unnecessary and the implications are implications that anger me to the point that I'd rather not discuss them.
"He will be that world's man of tomorrow." -Jor-El, Superman: Birthright #1