Glee

Shortly after Cory Monteith died, Ryan Murphy revealed that the writers were forced to changed their original final image for the show, because this was Rachel (as a huge Broadway star) and Finn (as a McKinley professor) reunited after years apart. Rachel mentions this dream to Mr. Schuester.

The role of Quinn Fabray was not cast until the night before filming began.

On the day of her audition, Lea Michele was in a car accident right outside of the studio. She came in literally still pulling glass from her hair.