I saw Night At The Museum: Battle Of The Smithsonian on TV. I didn't like the original that much, but I like the sequel even less. It was throwing more money at something to make it funnier.
And maybe it's just me, but it seemed like Ben Stiller was walking through the part. It's true he's essentially the straight man, the quiet center that all the craziness buzzes around. Still, he was practically morose, as if he were embarrassed to be doing the movie (for such a huge paycheck). At least Amy Adams and especially Hank Azaria, both new to the franchise, seem to be having a good time.
The biggest problem is it's impossible to take the story seriously. Not because it's fantasy, but because it hardly seems the script cares. It's just more of the same, without whatever spark made the first film original. The film made money, but not as much as the first. If they're considering another, I hope they contemplate the law of diminishing returns.