Mikael is tied up, slowly being hanged, and about to be sexually assaulted by Martin... then Lisbeth shows up, attacks Martin and saves Mikael.
Nils Bjurman, Lisbeth's replacement guardian, takes advantage of her financial situation by brutally raping her. Lisbeth gets her revenge by secretly taping the attack, torturing him and threatening to ruin him with the tape unless he gives her full control of her finances. This is actually one of the first moments we see of her, so it makes her all the more awesome.
Lisbeth effortlessly cleaning out Wennerström of his ill-gotten funds, leaving him to get killed by some of the criminals with whom he was associated. And the best part is that she didn't even do it for the money or anything. She just wanted to help Mikael take the bastard down.
The Girl Who Played with Fire:
Paolo Roberto, right before rescuing Miriam Wu.
Paolo: What do you say we find you somebody in your own weight class?
Lisbeth has been shot in the head and Buried Alive. She digs herself out with a cigarette case, and drives an axe into her father's head.
The Girl Who Kicked the Hornet's Nest:
After Gianinni gets Teleborian to commit to lying about everything in Salander's file while he's testifying, she systematically tears his entire treatment of Lisbeth to shreds, from force-feeding her psychotropic drugs, to falsifying legal documents regarding her mental state. Then the cops come in and arrest him for having almost 10,000 pictures of kiddie porn on his computer.
Though Lisbeth is always a walking moment of awesome, other women in the story get there CMOA, too. Erika sticks it to her new boss when he turns out to be a scuzzbucket, telling him he HAS to resign and refusing to be bullied.
When a dangerous stalker is threatening Erika, the female bodyguard hired by Milton single handedly turns him into a whimpering little boy, breaking his knee caps and cuffing him.
Monica Figuerola: A wonderwoman Cop. Her favourite activities? Sex and working out.
When she tries to arrest a member of the section, he tries to punch her. Picture a geriatric man trying to assault a strong, fit, police officer. She simply says "You have got to be kidding" and pushes him to the floor. So this is also a Crowning Moment of Funny
Lisbeth nailing Niederman's feet to the floor, then calling the gang he betrayed to tell them where he is. THEN she calls the police to let them know where the gang is. She kills two birds with one stone, by getting rid of Niedermann AND the Motorcycle Gang all in one.