Is it time to get the Fockers out of here? I don't mean to rush Gaylord, er, ''Greg'' (Ben Stiller); Greg's laid-back Jewish parents, Bernie and Roz (Dustin Hoffman and Barbra Streisand); or his uptight gentile in-laws, Jack and Dina Byrnes (Robert De Niro and Blythe Danner), now that they're all together again in Little Fockers. I dug the crazy clan a decade ago in Meet the Parents and enjoyed the bawdy Roz and Bernie show six years ago in Meet the Fockers. But comedy has changed. Jack can only give his son-in-law the stink eye so many times before the whole ''I'm watching you'' pantomime gets stale.