Gaius Julius Caesar. You probably know that he was a military general, dictator of Rome for a while, and his famous words, "Et tu, Brute?" (which he actually didn't say), but past that? This video will explain Caesar's entire life, in just four minutes!
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Notes

• Note [1] — Wikipedia says, "In 85 BC, Caesar's father died suddenly, making Caesar the head of the family at the age of 16." This, however, doesn't make sense, as Caesar was born in 100 BCE, which means that he couldn't've been older than 15.

• Note [2] — The day Caesar was killed, March 15, was also the date that all debts had to be paid in Rome (kind of like Tax Day in the US). March 15 was also called the Ides of March. The conspirators who assassinated him chose this day for two reasons: one, Caesar was set to leave on a military expedition on the March 18th and two, the 15th was the last Senate meeting before Caesar left — if they didn't assassinate Caesar by this day, then they wouldn't have a chance to assassinate him for another few years, until he returned from his military expedition.
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Image credits

Map of the Roman Rpublic: By english wikipedia, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=2031501. Bust of Plutarch: By Deedman22 - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=105397597. Map of the province of Asia: By Milenioscuro - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=45059701. Imperial flag of the Roman Empire (note that the Roman Empire and the Roman Republic were different, but the Empire’s flag is shown since “SPQR” (Senatus Populesque Romanus) was used in both the Roman Republic and the Roman Empire): By Ssolbergj - The vexillum of the Roman Empire was a red banner with the letters SPQR in Gold surrounded by a gold wreath hung on a military standard topped by a Roman eagle or an image of the goddess Victoria made of silver or bronze.[1][2][3][4], CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=4249122 . Gold Roman Solidus: By Classical Numismatic Group, Inc. http://www.cngcoins.com, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=37082485. Map of Hispania Ulterior: By Hispania_1a_division_provincial.PNG: Hispaderivative work: Jkwchui - This file was derived from: Hispania 1a division provincial.PNG:, GPL, https://commons.wikimedia.org/w/index.php?curid=19980233. Map of Gaul: By User:Feitscherg - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=42753.
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Music

1) Nocturne B. 49 in C sharp minor, by Frédéric Chopin

2) Étude Op. 25 No. 3 in F Major, Frédéric Chopin, CC BY-SA 2.0, via Wikimedia Commons
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