It's difficult to imagine anyone approaching Little Fockers with anything but the lowest expectations. This latest edition to the series that kicked off in 2000 with Meet the Parents meets those low expectations -- and then some. *Ben Stiller and Robert De Niro reprise their roles as antagonistic in-laws in a story that begins when De Niro and Blythe Danner (as the Byrneses) visit their twin grandchildren for a fifth birthday celebration. * Dustin Hoffman and Barbra Streisand (as the parents of Stiller's character) turn up to repeat old jokes; so does Owen Wilson, who plays one of Polo's former suitors. *Jessica Alba signs on as a flirtatious drug rep who asks Stiller's Greg to help sell Sustengo, a Viagra-like drug that leads to the expected (and predictably lame) joke about a long-lasting erection. *Harvey Keitel, who long ago starred with De Niro in Mean Streets, has a cameo role as a contractor who's working on a house that the Fockers are renovating. His presence serves only to remind us that just about everyone involved with this Focking mess might have made better use of their talents. * Whether little or big, the Fockers have worn out their welcome.