He was the author of "Profiles in Courage"
(John F.) Kennedy
DAILY DOUBLE:
Hank Hill knows it's the most common U.S. residential liquefied petroleum gas
propane
"Magnum, P.I."
Hawaii
Neptune High is named for a sea god; this title mystery solver who went there has a war god in her name
Veronica Mars
Holy 2nd bananas! Douglas Croft, Burt Ward & Chris O'Donnell have played this superhero, old chum
Robin (Batman)
He was a matinee idol
Ronald Reagan
(Sofia of the Clue Crew reports from the Goodyear Blimp's home base.) Having learned from the Hindenburg, modern non-rigid airships use helium in place of this explosive gas
hydrogen
"Breaking Bad"
New Mexico
Played by Alexis Bledel, Rory on this Netflix show's "A Year in the Life" returned to Chilton Academy in 2016
Gilmore Girls
On "How I Met Your Mother", this pal played by Neil Patrick Harris wanted to "flight-suit up" & "penguin-suit up"
Barney Stinson
He was postmaster of New Salem, Illinois
Abraham Lincoln
Used in WWI & against Iraq's Kurds, it's named for its smell
mustard gas
"King of the Hill",
I tell you what
"The Wonder Years" & "Freaks and Geeks" were set at schools named for this president with Scottish roots
McKinley
Dale Gribble, this Fox title guy's pal: "I'm your worst nightmare! I have a 3-line phone & nothing at all to do with my time!"
He owned a haberdashery in Kansas City, Missouri
Harry S. Truman
The atmosphere of Venus, the heaviest of any planet, is mainly this common gas 1.5 times heavier than air
carbon dioxide
"The Golden Girls"
On "King of the Hill", Bobby was chosen to be the mascot for the school named for this legendary NFL coach
Tom Landry
"I've just been handed a bulletin. 'You have something on your front tooth'", read this buddy of Mary Richards
Ted Baxter (The Mary Tyler Moore Show)
He was Thomas Jefferson's secretary of state
(James) Madison
FILL IN QUESTION:
A story or joke that's been repeated often, maybe too often
a chestnut
"black-ish"
California
Students learn spells & more at Brakebills, a school in this Syfy TV show based on Lev Grossman's books
The Magicians
From 1949 to 1957 Mohawk Jay Silverheels faithfully played this TV companion
Tonto (The Lone Ranger)