"Hey, what happens if I press this button with the skull and crossbones on it?"
From an interface design standpoint, it's completely bewildering: Switches, levers, dials, buttons, toggles, and every type of physical interface known to man are crammed into the cockpit of a Boeing 737—not to mention all the gauges and screens. While you're back there in the cabin trying to find space in the overhead, the pilot and co-pilot are up front working this insanely complex console to complete their pre-flight setup and get the engine running.
Check out this clip, shot aboard a new Boeing 737, of actual "pre-flight setup and engine startup procedures." You won't mistake the five-minute video for a Michael Bay production, but it does give you a good look at the overall console:
This video (also shot in a 737) gives you a better look at the actual buttons, switches and physical interface devices the pilots lay their fingers on:
The second video is purported to be a mash-up of footage filmed at different times, whereas the first video was taken before an actual flight from Greece to Sweden. Not terribly reassuring, that first vid: Did you see the huge rubber band holding one of the switches in place at 1:38; that janky dashboard-mounted clipboard holder around 2:40; and how the pilot starts holding onto the dashboard, apparently for support, while turning onto the runway around 2:20? What is he, sitting on a stool?