Happy Days icon Winkler dishes on Williams' iconic Mork audition, revealing the wild genius that captivated the sitcom crowd decades ago.
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Winkler recalls Williams unleashing an impromptu improv storm, leaving the Happy Days cast utterly awestruck by his raw comedic talent.
The role of quirky alien Mork was originally meant to be a one-off guest spot, but Williams' audition was so electric it led to the creation of the hugely popular Mork & Mindy spinoff series.
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Henry Winkler, Robin Williams, Happy Days, Mork & Mindy