Hollywood Retreads: From AP's review of "The In-Laws":

"The In-Laws," starring Michael Douglas and Albert Brooks as mismatched fathers whose children are getting married, is essentially the same as the 1979 comedy it's a remake of, starring Peter Falk and Alan Arkin.

There are a few minor differences: Brooks plays a nerdy podiatrist; Arkin played a nerdy dentist. Douglas, in the role of secret government agent, drags Brooks' character to France; Falk, in the role of secret government agent, dragged Arkin's character to Central America.

Then there's the main difference: This new film isn't funny.

I'm so happy. Does that make me a bad person? Ah, who cares. The In-Laws (the original) is very likely the funniest movie ever made. Unlike other comedies, it gets funnier each time I see it; there's always a quip I missed last time (usually because I was laughing too hard to hear everything). What the hell made anyone involved in this remake think they could improve in any way on the original?

Sucks to the morons in Hollywood who tamper with perfection because they can't think of anything new to do.