Riverwalk Theatre KNOCKED UPWriter-director Judd Apatow follows up “The 40 Year-Old Virgin” with a cautionary tale of an up-and-coming entertainment reporter (Katherine Heigl) whose one-night stand with an underachiever (Seth Rogen) results in pregnancy and a lot of decisions to make. With Paul Rudd, Leslie Mann, Jay Baruchel and Jonah Hill. R for sexual content, drug use and language.PIRATES OF THE CARIBBEAN: AT WORLD’S ENDChow Yun-Fat joins the rest of the cast for this third pirate outing, as Captain Jack Sparrow’s friends (and an enemy) rush to save him from a trap, while the future of the pirate way of life hangs in the balance. With Johnny Depp, Orlando Bloom, Keira Knightley and Geoffrey Rush. Written by Ted Elliott and Terry Rossio. Directed by Gore Verbinski. PG-13 for intense sequences of action/adventure violence and some frightening images.MR. BROOKSMr. Brooks (Kevin Costner) has an alter-ego (William Hurt) who likes killing people, and when a neighbor (Dane Cook) attempts to blackmail him, the two sides must work together to avoid capture. R for strong bloody violence, some graphic sexual content, nudity and language.SHREK THE THIRDIn the third installment of the series, the big green ogre (Mike Myers) faces enforced coronation as the next king of Far Far Away unless his friends, Donkey (Eddie Murphy) and Puss in Boots (Antonio Banderas), can find a suitable replacement. Directed by Chris Miller and Raman Hui. PG for some crude humor, suggestive content and swashbuckling action.Capitol TheatreSHREK THE THIRDPIRATES OF THE CARIBBEAN: AT WORLD’S ENDSPIDER-MAN 3Just when Peter Parker (Tobey Maguire) has a grip on the whole superhero thing, it all falls to pieces as his suit mysteriously turns black, giving him enhanced powers as two new villains, Sandman and Venom, appear on the streets of New York. Also opening in Imax. PG-13 for sequences of intense action violence.YEAR OF THE DOGMolly Shannon stars as Peggy, a plain, 40ish secretary who has written off finding love. When her beloved dog, Pencil meets an early demise, it turns Peggy’s life upside down and sends her towards what can only be called obsession. Though the movie is a comedy, it has a lot of tragedy too; the combination has been described as “stealthily sweet.” Directed by Mike White. PG-13 for some suggestive references. 28 WEEKS LATERJuan Carlos Fresnadillo’s follow-up to Danny Boyle’s zombie apocalypse, “28 Weeks Later” retraces its steps to the heart of the crisis, before leading us through the American-led reconstruction effort some seven months later. This is not an account of a disaster so much as it is the grisly anatomy of a quagmire. As the first film took us through the tail-end of the apocalypse through the eyes of someone who missed most of the action, the current film distributes its point of view among several characters who have witnessed too much. (1:40) R for strong violence and gore, language and some sexuality/nudity.