Lady Gaga 

On the episode "Lisa Goes Gaga," Lady Gaga is shown suspended by cables flying over the audience at a concert. Well surprise, surprise because at the Super Bowl LI's halftime show, Gaga descended from the stadium's roof with suspension cables wearing pretty much the same outfit on her episode. 

2016 Nobel Prize Winner 

In a 2010 episode, Milhouse predicted that Bengt R. Holmstrom would win the Nobel Prize in Economics and, sure enough, in 2016 Holmstrom and Oliver Hart were announced as joint winners of the prize. 

Donald Trump Presidency 

Seventeen years ago in an episode titled "Bart to the Future," Lisa becomes president after Donald Trump, apparently, ruined the economy. 

Siegfried and Roy Tiger Attack 

In 1993, an episode titled "$pringfield (Or, How I Learned to Stop Worrying and Love Legalized Gambling)," magicians in a Siegfried and Roy-like show got attacked by their trustworthy tiger.

In 2003, Roy was attacked by one of their white tigers during a live performance. He sustained injuries, but lived.

Arnold Palmer 

On the 28th season premiere, the satirical series made an Arnold Palmer joke... on the day that golfer Arnold Palmer died.

Homer Simpson tells his wife Marge that he plans to “Arnold Palmer” his pal Lenny.

“Arnold Palmer Lenny?” Marge responds. “You’re going to Arnold Palmer Lenny?”

He was of course referring to the lemonade and iced tea drink mixture -- which was named after the golfer. 

Faulty Voting Machine 

During the 2012 elections, a voting machine proved faulty when votes cast for Barack Obama went to Mitt Romney instead.

In a 2008 episode, Homer Simpson went to the voting booths to cast a vote for Obama, but... his vote went to McCain instead. 

Higgs Boson 

In a 1998 episode, "The Wizard of Evergreen Terrace," Homer writes out an equation on a chalkboard which, if solved, “you get the mass of a Higgs boson that’s only a bit larger than the nano-mass of a Higgs boson actually is," says Simon Singh, science author.

Horse Meat Scandal 

In 1994, an episode titled "Sweet Seymour Skinner's Baadasssss Song," the lunch lady was seen reaching into a barrel labeled "assorted horse parts" and putting the meat into the school's lunch pot.

In 2013, it was reported that traces of horse DNA was found in beef products across the UK. 

Guitar Hero 

The now basically extinct but once popular video game Guitar Hero was first released in 2005.

But in a 2002 "The Simpsons" episode, Mick Jagger and Keith Richards give Homer a jacket that has "guitar hero" printed on the back of it. 

Farmville 

The virtual reality game, Farmville, was all the craze in 2009 with people rushing home from work or school to tend to their farm.

In a 1998 episode, "The Simpsons" shows a scene were kids are excited to play in a yard work simulator. 

Old Beatles Letters 

In Season 2's episode 18, "Brush With Greatness," Ringo Starr from the Beatles is shown responding to fan letters while saying: "They took the time to write me, and I don’t care if it takes me another 20 years. I’m going to answer every one of them."

Well, two women in England received a reply to their fan mail form Sir Paul McCartney 50 years later. 

Smart Watches 

Sorry Apple, but "The Simpsons" had smart watches first.

In a 1995 episode in which the show is set in the future, Lisa's husband is shown speaking to a phone on his wrist. 

The first smartwatch wasn't created until 2013.

Disney Owns Fox 

Back in 1998, a quick scene in "The Simpsons" showed 20th Century Fox as "a Division of Walt Disney Co." And in March 2019, Disney completed its $71.3 billion acquisition of 21st Century Fox’s film and TV assets.

U.S. Wins an Olympic Gold Medal in Curling

In 2010, Homer and Marge beat Sweden and took home an Olympic gold medal for Team U.S.A. in Mixed Match Curling. As the animated sportscaster said, "Open your history books, tear out the pages and put this indelible Olympic moment in."