Batman Forever turned out not to be as bad as I feared. I gave it one more star than I gave Batman and Robin. I thought Jim Carrey made a decent Riddler, though it went over the top occasionally. At least this movie entertained me, however, I think it's a sad statement about these 90s Batman movies that they needed two bad guys to carry the film. Every one of Batman's enemies should be enough to carry the story. Even in the Adam West days the criminal mastermindes almost always worked alone.
OVerall, the 1990s Batman movies were too much like the TV show. I'm surprised they didn't splash the word "Pow!" on the screen. Jack Nicholson made the best enemy as the Joker in Batman. Poison Ivy was the worst baddie.
That said, I have very high expectations for Batman Begins and especially for The Dark Knight. I do hope they live up to the potential.