#1 Tom Hiddleston
Tom Hiddleston auditioned to play Thor before he starred as Loki in the Marvel Cinematic Universe.
#2 Sandra Oh
Originally, Sandra Oh auditioned for Miranda Baileyâ€™s role on Greyâ€™s Anatomy before finally asking Cristina to audition.
#3 Heath Ledger
Heath Ledger nearly starred in Batman Begins as Bruce Wayne before finally being cast in The Dark Night as the Joker.
#4 Chelsea Peretti
Chelsea Peretti initially auditioned on Brooklyn Nine-Nine for Rosa before being cast as Gina.
#5 Courteney Cox
Originally, Courteney Cox auditioned on Friends for Rachel before being cast as Monica.
#6 Rachel McAdams
Rachel McAdams originally auditioned in Mean Girls for Cady Heron before reserving Regina Georgeâ€™s position.
#7 Norman Reedus
Before being cast as Daryl Dixon, The Walking Dead star Norman Reedus initially auditioned for Merle.
#8 Sonequa Martin-Green
Also, before being cast as Sasha, Sonequa Martin-Green auditioned on The Walking Dead for Michonne.
#9 Rainn Wilson
Rainn Wilson, the office star, read about Michaelâ€™s role before booking Dwight.
#10 Rainn Wilson
Before booking Dwight, Rainn Wilson, the office star, read about the role of Michael.
#11 Eddie Redmayne
Before playing Newt Scamander in Fantastic Beasts and Where to Find Them, Eddie Redmayne initially auditioned to play Tom Riddle in Harry Potter and the Chamber of Secrets manner.
#12 Jensen Ackles
Originally auditioned for Sam by supernatural star Jensen Ackles before requesting Dean to audition as well.
#13 Janel Parrish,
Janel Parrish, Pretty Little Liars star, first heard for Spencer before landing Monaâ€™s part.
#14 Liam Hemsworth
Originally, Liam Hemsworth auditioned in The Hunger Games for Peeta before landing Galeâ€™s role.
#15 Jessica Capshaw
Jessica Capshaw initially auditioned before being cast as Arizona Robbins to play both Nurse Rose and Dr. Sadie Harris on Greyâ€™s Anatomy.