1. Season 5
It’s fitting that our favorite Chicago Fire season comes at the halfway point of the show’s first decade. Season 5 is the appeal of the show in a nutshell: thrilling action, heartwarming scenes between likable characters, and humor that manages to break up the enormous tension that comes with risking your life on the job.
Everything is perfectly calibrated in season 5, and the set pieces that pop up, whether it be a hostage situation, a warehouse fire, or an arson case that’s later revealed to be a murder, are still wildly entertaining to watch. This is the show’s gold standard as far as we’re concerned.