Terminator Salvation (2009)

For the first and only time, the franchise steps fully into the future war that every earlier film had only shown in flash-forward nightmares — and Salvation is at its best when it commits to that vision: a scorched, sand-blasted 2018 of Hunter-Killer aircraft, harvester machines that farm humans like livestock, and a resistance running on scavenged diesel and stubbornness. McG shoots the wasteland with a war-photography grit that owes more to Black Hawk Down than to the earlier films' tech-noir chases.

The film's real gamble is Marcus Wright, played by Sam Worthington with real anguish — a man who slowly, horribly realizes his body is a Skynet prototype built around a human brain and heart, a hybrid designed to infiltrate the resistance from the inside. It's the franchise's most interesting variation yet on its oldest question — what's still human once the machine parts take over — and Worthington sells the character's dawning self-disgust and eventual sacrifice better than the script strictly earns.

Christian Bale's John Connor, by contrast, spends much of the film as a supporting player in his own franchise, barking orders rather than carrying the emotional throughline — a structural choice that drew criticism on release and still feels like a missed opportunity. But the film's craft is real: the Terminator factory reveal, the six-story Harvester assault, and a young Kyle Reese's first true glimpse of the man he'll one day be sent back to protect all land as some of the saga's most striking future-war imagery, even if the whole is less than the sum of its parts.