When undercover agents get in trouble, it's seasoned FBI operative Travis Block's (Liam Neeson) job to get them out of it. But his latest assignment-involving an agent (Taylor John Smith) ready to divulge damning information about the Bureau to a journalist (Emmy Raver-Lampman)-puts Block's family in danger as he learns his old friend and boss (Aidan Quinn) is behind a murderous conspiracy. With Claire van der Boom, Yael Stone. 105 min. Widescreen; Soundtracks English DTS HD 5.1 Master Audio, Dolby Digital 5.1, Dolby Digital stereo; Subtitles English (SDH), Spanish; behind-the-scenes footage; featurette. Two-disc set.

Who will save the Earth after huge alien spacecraft demolish the Empire State Building, the White House, downtown Los Angeles, and most of the world's major cities? How about a brave Marine pilot (Will Smith), a brilliant cable TV technician (Jeff Goldblum), and the U.S. president (Bill Pullman), who must all work together to coordinate a daring offensive to stop the invasion on the 4th of July? The smash-hit mixture of sci-fi thrills and disaster movie dramatics also stars Robert Loggia, Margaret Colin, Vivica A. Fox, and Randy Quaid. 145 min. Widescreen; Soundtracks English Dolby Digital 5.1, Spanish Dolby Digital Surround, French Dolby Digital Surround; Subtitles English, Spanish; audio commentary. Two-disc set.

Remember those adorable baby alligators that your parents flushed down the toilet years ago? Well, one of them fed on dead animals that had been injected with a growth formula, and now he's a 36-foot-long maneater on a rampage under the streets of Chicago. Can a local cop (Robert Forster) and a reptile expert (Robin Riker) stop the carnage while there's still time? Gut-grabbing horror thriller co-stars Jack Carter, Henry Silva; script by John Sayles. 90 min. Widescreen; Soundtrack English.