Others have tried but failed (think Will Ferrell’s Land of the Lost) when they tampered with the space-time continuum, in their movies. In regards to this action comedy, going back in time was the best thing to have happened in this film franchise. The special effects were up to the same excellent caliber as the previous two movies and Will Smith (Independence Day, The Pursuit of Happyness) as Agent J still had his quick witted delivery of endless jokes. Ten years since the previous sequel, this science fiction thriller aged well. A seriously bad alien criminal with a long history tied to Agent K, played by Tommy Lee Jones (No Country For Old Men, The Fugitive), went back in time to kill the agent, thus changing the course of history. Agent J had to go back in time to prevent the death of a much younger Agent K, played brilliantly by Josh Brolin (True Grit, Milk). Mr. Brolin executed the mannerisms and tone of Tommy Lee’s character perfectly. I also suspect baby boomers will get a kick out of time traveling back to 1969, I certainly did. Except for the need of tighter editing and lack of depth in the script, this 3rd installment did not disappoint me. I had a good time watching this film and believe the space-time continuum was returned to order, with the help of a few good laughs.