What's the Kennection? #63

Welcome to Kennections, a weekly quiz created by Jeopardy! champion/co-host Ken Jennings. Here's how to play: All five answers to the questions below have something in common. Can you figure it out? (Note: We've given you a hint by showing you how many letters are contained within the answer, but this quiz is not interactive.)

1.  In a Greek legend from antiquity, the Phrygians got a new king after the slicing of what knot?

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2.  A Martian comes from Mars, but what would an alien from Jupiter be called?

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3.  On what dark Fox sitcom did Stacy Keach play the title character’s alcoholic father Ken?

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4.  What’s the name of Hamlet’s evil, usurping uncle—though no one in Shakespeare’s play ever calls him by his name?

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5.  What does the “T” stand for in the name of Star Trek’s Captain James T. Kirk?

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