The Dark Knight - Batman vs. The Joker
Admittedly, this scene is not a pure fight between Batman (Christian Bale) and the Joker (Heath Ledger). It’s better than that. Several others play a part in this scene but it comes down to a one-on-one battle. Watching the savvy tactics of each character makes this exceedingly fun to watch, as it becomes obvious that Batman and the Joker are equally good at what they do, they’re just at the complete opposite ends of the spectrum of good and evil.
Highlight: The truck flip, followed by the Joker’s pleas for Batman to run him down on his batcycle.
IMDB "Fact!" When the Joker commandeers the semi after his driver is killed, the bullet holes on the windshield form a smiley face.
What makes it badass: The violent, brilliant schemes of the Joker locking horns with the intellect and superior technology of Batman makes this one of the most compelling scenes in one of the best action movies of all time.