Don outrunning the Infected in the beginning of the movie.
Although Don is already Ax-Crazy at the time, the fact that he manages to survive the firebombing of the district through retaining enough reason to hide.
Flynn, turning the rotor of his helicopter into a Cuisinart for the attacking Infected.
Doyle and Scarlett's Car Chase throughout London, being pursued by a helicopter trying to blow them up. Doyle's Heroic Sacrifice kicks that into Tear Jerker territory, though.
