Despite this, the combined film drags out for over four hours, mostly due to the fact that The Bride refuses to use this finishing move on anyone but her final opponent, the eponymous Bill. This can probably be chalked up to honor or sportsmanship or, more likely, dramatic effect, but if she'd been more liberal with the Exploding Heart Technique instead of committing to engaging a group of assassins in melee combat, then Tarantino could have distilled his epic into a single movie. Hell, maybe a half episode of a TV show.
Like the Fox Force Five pilot.
Over the course of the story, The Bride is repeatedly stabbed, shot, and even buried alive. Just so that she could finally confront Bill and slap him to death in a few seconds, creating one of the most blue-balls-inducing climaxes in film history.