How Many Years?
Centennial
What is 100?
This mythic strongman gets the fifth-largest constellation
Who is Hercules?
Proverbially, you can do this "out of the other side of your mouth"
What is laugh?
A ruler is divided into inches & a thermometer is divided into these
What are degrees?
Zoinks! Hunters Sam and Dean find themselves in a classic cartoon and help out this famous mystery-solving team and their Great Dane.
What are "Supernatural" and "Scooby-Doo"?
Triennial
What is 3?
Pictor is this, a painter's stand
What is an easel?
A person difficult to know or convince is a this nut to crack
What is tough?
Increased levels of this gas in the atmosphere add to the greenhouse effect, warming the earth
What is carbon dioxide?
The pressure's on to stop a stink bomb at Springfield Elementary! Special Truancy Agents Jack Bauer and Chloe O'Brian are the only ones who can save the city!
What are "The Simpsons" and "24"?
Septennial
What is 7?
Sagittarius is the archer; Sagitta is this
What is the arrow?
This long, narrow receptacle holds food for animals
What is a trough?
This light display may be "Australis" or "Borealis"
What is the aurora?
In 2009 this ambitious crossover involved three Investigative teams; one from Las Vegas and two other major cities.
What are "SCI," "CSI: Miami," and "CSI New York"?
Quadricentennial
What is 400?
This Zodiac constellation resembles twins
What is Gemini?
It means having a coarse surface; you can find it bordering a golf fairway
What is rough?
In 1953 Crick & Watson came up with the double helix model for this nucleic acid's molecule
What is DNA?
Agents Fox Mulder and Dana Scully investigate a mysterious incident in Los Angeles, enlisting a TV crew from a real life crime-focused reality show.
What are "The X-Files" and "Cops"?
Novennial
What is 9?
Virgo is a maiden; Monoceros is this mythical beast that represents maidenhood
What is a unicorn?
An adequate quantity
What is enough?
Making up about 80% of the air, it has to be "fixed" before you can use it
What is nitrogen?
Cmdr. Rabb and Lt. Col. MacKenzie required the investigative services of Special Agent Gibbs and his team in this 2-part episode. This would also serve as the backdoor pilot for the latter team.
What are JAG and NCIS?