From Amazon.com
It was one of those "something in the air" moments in Hollywood. In the space of a year, four different films came out on the same subject: A kid lands in an adult's body (and, often, vice versa--get it?). The best was
Big, but this one was surprisingly amusing, thanks to a goofily adolescent performance by Judge Reinhold (as the kid in an adult's body) and a comically serious one by young Fred Savage, who can convey the sense of an grownup trapped in a kid's world. The plot is virtually identical to its competitors--overworked Dad has a big deadline and has to rely on the unreliable kid to come through for him, even as he gets a sense of what his son's life is like--but Reinhold and Savage charm their way through it.
--Marshall Fine