I'm an Explosive

Although this movie is rather old, what makes it still watchable is the endearing performance by William Hartnell, perhaps best known for his roles in Doctor Who and Carry On Sergeant. Hartnell was a true gem in British Film and Television history. Some say he was hard to work with, but many say he was a true professional and loved his work. I would personally agree with the latter, as that interpretation shines through his work in this film!