NFL Wild Card - As the coaching carousel turns and NFL organizations decide among Doug Pederson, Bill O'Brien, Brian Daboll, Jim Harbaugh, and pretty much every viable candidate except Eric Bienemy, keep in mind that all NFL head coaches can be categorized into a small handful of archetypes.
Movie Sergeant
The Mike Tomlin/Tom Coughlin type: his gruff exterior conceals a gruff mantle and gruff outer core, but there's probably a warm-and-squishy heart of gold buried down there somewhere.
The Movie Sergeant is a smart default persona for a standard-issue defensive coordinator getting his first head coaching gig: no one will be surprised by his no-nonsense, hard-nosed, drill-instructor approach when he's hired, and no one will remember it after he is fired.