David Schneider(IV)

Despite probably being better known as a writer and comedian on British television, he has played two small but pivotal roles in major movie franchises - he appears as the train engineer whose actions allow Ethan Hunt to emerge victorious in the final act of the original Mission: Impossible (1996), and he plays the scientist who fails to prevent the release of the rage virus that precipitates the collapse of civilization at the beginning of 28 jours plus tard (2002).