#216 What's the Kennection?

1) What 2004 horror film, a surprise hit, had only six days to shoot the bathroom scenes that make up the bulk of the movie?
2) What mechanical device, which only allows movement in one direction, makes socket wrenches (but not Miley Cyrus videos) possible?
3) Heron's Formula can be used to find the area of what shape?
4) Babar's capital city is named for what other elephant, his cousin and queen?
5) In 1998, 119,986 people in Florida set a world record by forming the longest line ever for what Cuban dance?
What's the "Kennection"?
Ken Jennings was on Jeopardy! 75 times in a row, so long that your grandma got sick of him. He is the author of nine books, most recently the Junior Genius Guides for children. He lives in Seattle.