It's the sequel to the "Meet the in-laws" with Ben Stiller and Robert De Niro. Babs and Dustin Hoffman are Ben Stiller's parents that were not in the last movie. The first one was moderately amusing, now with Babs and Dusty, probably it's DOA. Sequels are usually a bust.
I notice that the trailer for ''Meet the Fockers'' on TV sure doesn't feature Barbra - I don't think she's even shown. I so hope the producers realize by hiring her they probably reduced their box office by 50% even before there was any word of mouth on how bad the movie is (and it looks really awful judging by that trailer). Gee, what a shame.