Ben Stiller is back in the museum. Specifically, in "Night at the Museum — Battle of the Smithsonian."

He points out that since the first "Night at the Museum," he has received hundreds of letters. "So I'm told. . . . I can't read all the mail that is addressed to me, which I think you have to agree is only logical, not lazy," says the busy actor-writer-director. The letters he refers to are from kids excited about museums.

"It's been proven since the original (movie) that more young people are going to museums. I guess their curiosity has been piqued. Maybe they think they'll find adventure there, or the glamour of the past. It is gratifying. But I get all these letters asking me about museums around the world like I'm an expert. Sometimes (I'm asked) very specific questions, like which museum has the best collection of mummy cases, etc.