Katie Holmes and Tom Cruise at Tropic Thunder Premiere

Katie Holmes — in heels that made her considerably taller than hubby Tom Cruise — and her husband walked the red carpet at the Tropic Thunder premiere. After they finished taking pictures, they signed autographs for fans before heading into the theater. Our spies say that during the last scene of the movie — which features Cruise in a dancing sequence — Holmes clapped loudly and couldn’t stop laughing. Cruise’s kids, Connor and Isabella, sat behind them during the screening.

According to writer Etan Coen, “Tom Cruise is an absolute revelation in this movie. People will not believe it. You won’t be disappointed.”

I’m torn about seeing this movie. I’ve heard that it is incredibly funny, but I know that mentally challenged people are also a target in Tropic Thunder. I’m not sure how jokes like that could be done in decent taste.