I remember really enjoying the book How to Eat Fried Worms when I was in 3rd or 4th grade. It was funny and not in a stupid way that super mature kids like me would find obnoxious. From what I recall the movie did not follow the book too closely, but like the book, the movie was good, light-hearted fun. I know the hilarious bit with DDR was not in the book for sure.
The movie also provided race to imdb entertainment due to the appearances of the recognizable, but unplaceable Kimberly Williams (from Father of the Bride) and Hallie Kate Eisenberg, the Pepsi girl from awhile back.