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

Matthew McConaughey in "Unsolved Mysteries"

McConaughey's debut role was in one episode of "Unsolved Mysteries" way back in the day. Before he was ever dazed and confused, he played an ex-marine and young father who meets a tragic end. 

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The More You Know

  • Jaleel White was the voice of Sonic the Hedgehog in multiple old animated series.
  • Before going solo, Britney Spears was in an all-female group called Innosense.
  • Michael J. Fox's middle name doesn't start with a "J." His middle name is actually Andrew.
  • 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."
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