This was Jessica Alba's first film. She was initially hired as two-week extra, with no lines. Later, she had to fill in for a principle character and received her first on-screen credit.
In the early trailers, the make your own omelet scene included the invention of the popcorn omelet. It grew into a ball then exploded sending kids flying out the windows. This scene was cut from the final film and removed from future trailers.
When the twins are playing the video game, they argue about whether to launch their fighter jets from Milwaukee or Minneapolis, eventually they agree to Milwaukee. When the video game screen shows on screen, it's actually Duluth, MN.