Woo has found a new home, and the audience wins. They've been after each other for years, and they know each other inside and out.
Cage plants a biological bomb somewhere in the city limits, then goes into a coma.
In order to find the location of the bomb, Travolta must take Cage's face, and go undercover in jail, hoping Cage's brother will spill the beans. Before Travolta can get out, Cage wakes up and takes Travolta's face. From this point on, when you see Travolta, it's really Cage, and when you see Cage, it's really Travolta. The two actors do an amazing job of capturing the other's quirks and personality traits. On top of that, Woo creates an atmosphere of heightened senses and drama, where the actors plumb the depths of their feelings, much more so than in any American action picture I've ever seen.