Actor Demands That Changed Movies For The Better

William Shatner in Star Trek

Apparently, during production of Star Trek: The Original Series, William Shatner developed quite an ego. As the show became more successful, he demanded that more storylines be tailored to fit his character and expand the role of Captain Kirk.

He would often demand to oversee the writing process and direct the writers to encourage them to take his character in more exciting places. This, of course, caused tensions on set with other actors.