The ghost: Killed in a Christmas Eve vehicular accident, Nathaniel Fisher Sr. (played by Richard Jenkins) isn't gone for good. He spends years dolling out fatherly advice from beyond the grave. Boo who? Distant in life, Nathaniel proves to be a confidant in death, frequently talking out life's problems with eldest son Nate. However, despite their newfound bond, Nathaniel never ceases to surprise Nate and his siblings as they discover their dad wasn't at all who they thought he was.
Tracy Bennett / HBO
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