9. Talia Shire's Bout With The Flu
After their date at the skating rink, Rocky and Adrian return to his apartment. Rocky tries to get romantic, but the shy Adrian is hesitant at first. You may think this was just a spur of the moment acting choice by Talia Shire. In fact, she didn't want to kiss Stallone because she'd come down with a case of the flu.
Talia Shire was, understandably, concerned about spreading her illness to the star of the movie. But, Stallone pressed forward with the scene kiss and all, and he later contracted the flu. In fact, Stallone filmed all of the training scenes in Mickey's gym with a fever.