'98 Godzilla Expert
Tempus Sure Fugits (again)
Magicians
Mandela Effects
Harry Potter or Lord of the Rings
Canon Events
100

We would watch the movie every Christmas, and my younger cousin would refer to the film's lead, Matthew Broderick, as this cyborg policeman, another of his famous roles. 

Who is Inspector Gadget?

100

July 6th, 1189: King Richard I, known more by this epithet than by his regnal number, is crowned King of England.

What is The Lionheart?

100

This magician, the most commercially successful solo entertainer in history, did indeed take his name from a Charles Dickens novel, though his first name was already the same.

Who is David Copperfield?

100

One example I saw on reddit was someone remembering listening to this Black Eyes Song in 2007, when it really did not debut until 2009; I found this unbelievable as part of the song mentions 2008 as being old.

What is Boom Boom Pow?

100

Shadowfax / Witherwings

Shadowfax: LOTR

Witherwings: HP

100

Because divorce was forbidden by canon law, King Henry VIII sought this kind of separation from his wife, Catherine of Aragon; Britney Spears would receive the same thing in 2006.

What is annulment?

200

After TriStar's rights to Godzilla expired, Toho Studios assumed ownership of the 1998 design and rebranded it as this new character.

Who is Zilla?
200

July 6th, 1947: Mikhail Kalashnikov of the Soviet Union starts production of this gun.

What is AK-47?

200

This magic phrase comes from 1001 Nights, as the incantation Ali Baba uses to access his hidden cave of treasure.

What is open sesame?

200

The original Mandela effect was named for people remembering his death in the 1980s when in actuality he was still alive; his death in December of this year feels appropriately long ago now.

What is 2013?

200

Misty Mountains / Forbidden Forest 

Misty Mountains: LOTR

Forbidden Forest: HP

200

Though a rule in the Book of Mormon since its publishing in 1830, this practice wasn't officially banned by the Mormon church until 1890.

What is polygamy?

300

Monster Mouths released a tie-in toy in which Godzilla's tongue was an edible lollipop you had to French kiss in order to eat; the next year, they would release an even more horrifying version for this Star Wars character.

Who is Jar Jar Binks?

300

July 6th, 1957: These two founding members of The Beatles meet for the first time in Liverpool.

Who are Paul McCartney and John Lennon?

300

Because he is also a magician, this endurance artist's unbelievable feats are often believed to be simple tricks, though they have been independently verified.

Who is David Blaine?

300

Some fans of Avatar: The Last Airbender claimed that there was meant to be a 4th season, which was canceled after the failure of Shyamalan's live action film; in reality, the film was not released until this year, 3 years after the show's finale.

What is 2010?

300

Nurmengard / Gladrags

Both are Harry Potter!
300

In 2011, DC Comics canceled all of their existing runs and rebooted every title under the banner of "The New [this number]."

What is 52?

400

The sequence featuring the baby Godzillas has been criticized as a knockoff of these famous movie monsters from a 1993 film.

What are the Velociraptors?

400

July 6, 1348: Pope Clement VI officially declares that Jews are not to blame for this, and encourages their protection.

What is the plague?

400

On this show, professional and amateur magicians alike are invited to perform a trick in front of the famous magic duo Penn and Teller; if they cannot figure out how the trick is done, the contestant is rewarded with an "F. U." trophy.

What is Fool Us?
400

Some Pokemon fans remember the end of Pikachu's tail being this color; from 2013 on, that color is part of the Pikachu Libre variant.

What is black?

400

Wormtail / Wormtongue 

Wormtail: HP

Wormtongue: LOTR

400

The controversy over the inclusion of these two lines in the Quran came back to public consciousness after the release of Salman Rushdie's 1988 novel of the same name.

What are The Satanic Verses?

500

Director Roland Emmerich cast caricatures of these two movie critics, who were known for giving his movies negative reviews, as the Mayor and his assistant; the critics found themselves confused as to why they weren't killed by the monster.

Who are Siskel and Ebert?

500

July 6th, 1917: A British army officer successfully works with local forces to capture Aqaba from the Ottoman Empire; his story is shown in this 1962 film, widely considered the greatest British film ever made.

What is Lawrence of Arabia?

500

William Ellsworth Robinson, known by his yellowface stage name Chung Ling Soo, died from an equipment malfunction when performing this trick.

What is a bullet catch?

500

Many remember the Evil Queen in Disney's Snow White saying "Mirror, Mirror, on the wall", but she actually says this.

What is "magic mirror on the wall"?

500

Helm Hammerhand / Dedalus Diggle

Helm Hammerhand: LOTR

Dedalus Diggle: HP

500

The deuterocanonical books, also called this term which means a story of doubtful authenticity, were included in Roman Catholic Bibles after the Council of Hippo in 393.

What is Apocrypha?

600

The end credits features the rap song Come With Me by the artist then known as Puff Daddy; the rap samples the song Kashmir by this famous rock band whose lead guitarist performs on the track.

What is Led Zeppelin?

600

July 6th, 1942: Anne Frank and her family flee Germany and go into hiding in this country.

What is The Netherlands?

600

Mandela Effect Crossover: Many believe Harry Houdini died of drowning from a failed escape, but in reality he died of a ruptured appendix from this.

What is getting punched?

600

Possibly due to his size, many remember a famous painting of King Henry VIII holding this food in his right hand; in reality, he is holding a pair of gloves.

What is a turkey leg?

600

Aragog / Ancalagon

Aragog: HP

Ancalagon: LOTR

600

The earliest Robin Hood stories date back to the late 1200s or early 1300s, but his backstory, in which he is away from England fighting for King Richard I in this city, was established in the 1500s.

What is Jerusalem?

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