I was a little wary of this film from the previews, when it came out in the theaters. They didn't look too appealing, but I thought, wait a second, there's an all-star cast (Robin Williams & Billy Crystal), an all-star director (Ivan Reitman of Ghostbusters fame), and an all-star screenwriting pair (Lowell Ganz and Babaloo Mandel of City Slickers fame). It has to be good. Well, it wasn't. Sure it had it's moments. The concert scenes were funny (and look for a special cameo performance from one of Hollywood's biggest stars), and the shower scene was good, but when you pair up two of the most talented comedians alive today, you don't want moments. If you team up Ah-nold and Stallone, you expect things to be blowing up left and right, and a lot of people dead throughout the entire film. It's the same when you team up Williams and Crystal. Both are extremely funny men (have you seen Mrs. Doubtfire or City Slickers recently). But in this film, neither of them let go like they usually do. Both these men are amazing improvisational comedians, yet they seemed subdued during the entire movie. I read that they ad-libbed a lot of the scenes, and I hope that's wrong, because then these two are losing their touch, and that would be tragic. I also read (in the same article) that the two of them are thinking of doing another film together. I hope that's true, but if they do, I hope they let themselves go and have fun with it, because in Father's Day, no one seemed to be having any fun at all.