Back in 2011, people officially started celebrating May 4th as Star Wars day, using the phrase "May the 4th be with you." Now it is a widely accepted holiday for Star Wars fans across the globe. In 2012 The Walt Disney Company purchased the rights to the legendary franchise, and started officially recognizing May 4th as Star Wars day, as well.
On The Tonight Show Starring Jimmy Fallon, Jimmy was in the middle of his Audience Suggestion Box bit when he pulled out a suggestion that read, "I love Star Wars. I also love the song 'All Star' by Smash Mouth, which got me thinking, could you show all of the stars of Star Wars singing 'All Star'?" What played next was a mashup of clips from the movies, where the characters said the words to the song. And one word at a time, all edited together, it sounded like all of the character were singing the song together.
May the fourth be with you!