In the 10 years since the last Men in Black movie, Tommy Lee Jones has played everyone from a wizened small-town sheriff to a downsized white-collar worker, so policing aliens really isn't his thing these days. Most of the heavy lifting this time around lands on the sturdy shoulders of Josh Brolin as a younger Agent K, whom Agent J (Will Smith, who hasn't aged a day) travels back to 1969 to save. That's the plot. But like the other two movies in the series, III is mostly an excuse for some fancy special effects and state-of-the-art CGI, now in 3D. By Michael Gallucci