These Celebs Guest-Starred On Television Shows Before Their Big Break

Millie Bobby Brown in "Grey's Anatomy"

Before Eleven, she was Ruby, a patient at Seattle Grace Hospital. Her mother fell and hit her head, and Dr. Owen Hunt helped walk her through a procedure over the phone until help could arrive.

Robert Downey Jr. claims that Burger King saved his life from his drug addiction.
Growing up, Katy Perry wasn't allowed to eat Lucky Charms cereal because luck was "linked to the devil." Her family also called deviled eggs "angeled eggs."
Matthew Broderick was convicted of careless driving in a car accident in which two people died.
As a child, Jim Carrey wore tap shoes to bed just in case his parents needed cheering up in the middle of the night.

These Celebs Guest-Starred On Television Shows Before Their Big Break

Millie Bobby Brown in "Grey's Anatomy"

The More You Know