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    10 Of The Best Casting Change Decisions In Recent Television History

    All in the name of "chemistry."

    1. Parks and Rec: Paul Scheneider replaced by Adam Scott and Rob Lowe

    2. Bones: Jonathan Adams replaced by Tamara Taylor

    3. Castle: Ruben Santiago-Hudson replaced by Penny Johnson Jerald

    4. Psych: Anne Dudek replaced by Maggie Lawson

    5. Modern Family: Ella Hiller and Jaden Hiller replaced by Aubrey Anderson-Emmons

    6. New Girl: Damon Wayans, Jr. replaced by Lamorne Morris

    7. Big Bang Theory: Amanda Walsh replaced by Kaley Cuoco

    8. Grey's Anatomy: Replacements all around

    9. Private Practice: Merrin Dungey replaced by Audra McDonald

    10. How I Met Your Mother: "The Mother" replaced by Cristin Milioti