The re-release of Fail-Safe with George Cloony is really good
Then for electronics movies,
Runaway, it is about IC masks for a specific purpose, and killer robots, drones, etc (KGB assassination type shit), some hacking, bug finding, etc
Death Machine, campy killer robot movie.. more hollywood but the robotic systems are kind of interesting, they make this thing... fast.. which is a little unusual for the usual bad robot deal.
all the terminator movies, but they don't really tinker outside of a few repair jobs
ghost in the shell?