The Formula?

The Dark Knight
A Lair
Bat Cave: Forget the penthouse: Bruce Wayne (Christian Bale) keeps his HQ underneath a shipping yard.
A Weapon
Batsuit: Wayne's outfit isn't just a fashion statement; it packs enough tricks and tools to fight any bad guy.
A Nemesis
The Joker: Crime is always a laughing matter for Batman's nihilistic foe (Heath Ledger).

Iron Man
A Lair
Laboratory: Billionaire Tony Stark (Robert Downey Jr.) uses his secret lab to develop the Iron Man aromor.
A Weapon
Missiles: Even given Stark's impressive arsenal of gizmos, the rocket launcher is without a question the bomb.
A Nemesis
Obadiah Stane: Stark's old friend (Jeff Bridges) turns into an opponent with his own supersuit.

Indiana Jones and the Kingdom of the Crystal Skull
A Lair
Jones' House: For a little bit of R&R, there's simply no place like home for Indiana Jones (Harrison Ford).
A Weapon
Whip: The bad guys have changed over the years, but Indy's trusty lash remains his most cracking asset.
A Nemesis
Irina Spalko: Indy's Russian rival (Cate Balnchett) has an iron will, murderous henchmen, and a killer haircut.

Sex and the City
A Lair
Closet: Carrie Bradshaw (Sarah Jessica Parker) lurks in that ridiculously massive custom walk-in.
A Weapon
Flowers: Carrie's notoriously lethal bridal bouquet finds its target after Mr. Big (Chris Noth) screws up the big day.
A Nemesis
Mr. Big: Big's back-and-forth brings Carrie to tears...and forces us to endure that epic Mexico sequence.