Underworld (film)/Awesome

Selene breaking Kraven's nose
Erika helping Selene escape the mansion. Okay, maybe it wasn't completely altruistic, but she'd spent the whole movie as a brainless bubblehead.
Viktor killing a werewolf through simply slapping him
Michael outspeeding Viktor through about half of the final battle
Selene slicing Viktor's head in half with his own sword. Icing on the cake: she shows him the blade with his blood on it before he dies.
Rise of the Lycans had a few more. In addition to Raze winning a fist fight with a couple wolf-form lycans before he is turned, there's the climactic scene with Lucien and Victor.

Victor: "I should have crushed you under my heel the day you were born!"
Lucien: "Yes, you should have."
Stabs Victor in the face
Lucien: "But you didn't."

Selene defeats several Lycans bloodily and messily to get into Tanis' abode. While striding through the hallways she meet up with two scantily clad vampire ladies ready to defend... and she breaks both their necks in the space of ten seconds.
Pretty much every action scene in Underworld: Awakening, especially Selene vs the Uber-Lycan
- One would think that Eve, Selene's daughter was a goner when the werewolf had its jaws on her throat. Seconds later she rips its skull in half.
- The van carrying Selene's daughter is driving out of the building. Out of nowhere Selene appears and slams into the van like a football player making a tackle, flipping the van over and causing it to slide clean across the garage.
- Eve kills Lycan-form Lane after a vicious fight by ripping out his throat.

"It hurts more if you struggle. Trust me."

- Selene impales Quint's chest, but it heals instantly. Then Selene reveals that she inserted a grenade into him, and he blows up.