I can agree with Forever, but I don't see how you can even put Batman & Robin in the same league as the first two. Forever had a lot of potential, and I think that's what made it good for me, rather than great.
Pros:
I loved Kilmer's Bruce Wayne, and Batman.
It seemed like it could work as something of a continuation of the previous films.
Good plot.
Great Casting.
Cons:
Too steeped in 90's culture; one of the things that made the other Batman films so great was the timelessness; Gotham felt like a place that existed outside of reality; where Prince could be playing in a city that felt like a 1930s/1950s hybrid.
Over the top villainy; while I would've liked to have seen Billy Dee Williams' interpretation, I thought Tommy Lee Jones was a great choice for Two-Face, and he's a phenomenal actor to boot, but, at the end of the day, the man can only do so much with what he had, and they have him a ****ing cartoon character; hell, TAS Two-Face was way more serious than that, and that is a cartoon.
Carrey as Riddler was great casting, too, but, between the weird stylistic choices, and, again, the over the top cartoon acting, it just felt like a wasted opportunity.