Re: Trek guest actors in maybe surprising roles
According to the book by Russell Johnson (the Professor), Bob Denver forced a showdown with the producers to get Johnson's and Dawn Wells' names in the opening credits. Johnson didn't learn this until years later, after the show ended. Apparently, Denver's contract allowed him to choose how he would be billed. He threatened to have his own name appear in the end credits, if Johnson and Wells weren't moved up front.
Dr. Howard, Dr. Fine, Dr. Howard: For duty and humanity! --Men in Black (1934)