Nitpick: Kiki mentions tying Croque into an animal balloon. Balloons were not invented until 1824.
Nitpick: Napoleon uses what appears to be a form of the Gatling gun against Jack, claiming he picked it up at the last Expo. The Gatling gun wasn't invented until 1862, over sixty years later.
Nitpick: It seems strange that Jack would wake up naked with Emilia, but his hair would still be tied back in his usual queue- that's the one thing most people would be sure to remove before going to bed for the night!
The music played in Nardo's sub is "Toccata and Fugue in D minor" by Johann Sebastian Bach.
Nitpick: When Jack, Emilia, and Blackbeard are up in the hot air balloon, Jack looks over at the boat containing the "Founding Fathers and Sons". George Washington is shown dancing. The show takes place in 1801, but Washington died in 1799, two years before this episode was supposed to take place.
Nitpicks: Catherine the Great is depicted here as having a Russian accent. However, the real empress grew up in the German kingdom of Prussia. If she had any accent, it would be a German one, not Russian. Also, Catherine died in 1796, but the show is set in 1801!
In late 1801, the Marquis de Sade could not have been on Agony island, so this had to be early 1801. He was arrested for his writings that year. He was later transfered to the insane asylum Charenton.
Governor Croque and the Marquis de Sade are second cousins, which explains the family resemblance!
We learn that Jack got the scar on his chin when he carved a hole in a stained glass window of a convent.
Nitpick: Bullets of that period were made of lead, a metal that isn't drawn by magnetism.
We learn that Emilia's nickname is "Fu Fu", and she got it when she was three years old. When a little boy was mean to her she Fwew him Fwew an open window! We also learn that Jack's nickname is "Little Willie", but we are not told why.
This is the first appearance of Napoleon at Palau Palau.
The fight between the Daring Dragoon and Capt. Brogard on the bridge is the source of much of the Dragoon's footage in the opening title sequence. (This supports, with the carrier parrot scene, the idea this episode was one of the earliest filmed, but not shown in order.)
Nitpick: Jack and Emilia act as if they have never met Jean Claude the carrier parrot when he appears in spite of the fact that Jean Claude was an old buddy of theirs in the episode "The Floundering Father". TV shows are often filmed out of order, occasionally creating such continuity problems.
We learn that it was Jack who came up with the idea of the Boston Tea Party and unmasked the traitor Benedict Arnold. Arnold was one of Washington's finest officers, but when he didn't get the credit he deserved for the American army's victory at the Battle of Saratoga he turned to the British, who promised to give him his just due.
Nitpick: The main story revolves around Blackbeard kidnapping Benjamin Franklin for profit from the French. The show takes place in 1801. Blackbeard died in 1714 and Franklin died in 1790.
Nitpick: Croque tells to get Blackbeard a shot of penicillin. Penicillin was not invented until 1928.
Nitpick: Jack pulls out a hundred dollar bill with Franklin on it, but that was an anachronism- they didn't even print hundreds until much later.
We hear the name of Jack's horse for the first time here - "Nutcracker", aptly named for Jack's habit of dropping onto the saddle from a story or two up in the air.
Goof: While fencing with Brogard on the ship, the clasp on Jack's cape switches from being undone to done, the shift taking place after Jacks says, "Tag, you're it!"