The Charm: Schwarzenegger, Stallone, Van Damme - let's be honest, while the 80s action heroes are bad-ass to the core, likeability isn't high up their list of qualities.
Enter Willis, a guy whose ticket to actionsville was a TV comedy, and whose response to a crisis was satisfyingly plausible: startled-bunny facial expressions, panicky huffing and puffing, and lots of swearing.
Oh, and for good measure he could go bad-ass just as effectively as Arnie or Sly.
Most Likeable Scene: Stuck on the roof of the Nakatomi Plaza, hounded by Uzi-toting terrorist/bank robbers, bullets strafing the air, McClane calls for back-up...
"This frequency is reserved for emergency communications," he's told, so Willis hits back with a heckle so natural it could have come from the audience: "No fucking shit, lady! Do I sound like I'm ordering a fucking pizza!?"