In the "Reunion, and Turnabout" case, an American car is called a British car in the American release because cars in Great Britain and Japan drive on the left side of the road, whereas North American cars drive on the right.
During Case #4, Farewell My Turnabout, Phoenix and Pearl enter Corrida's hotel room on the second day of the investigation. When Wendy Oldbag appears, Phoenix says "Zoinks! It's the Alien!!!", a reference to the show Scooby Doo, where the character Shaggy yells "Zoinks!" when scared.
In the fourth case, Spoiler:when Phoenix implicates Adrian Andrews as the murderer of Juan Corrida, Phoenix says, "Ms. Adrian Andrews! I choose you! You are Mr. Corrida's killer!" This is a reference the English dub of the Pokemon anime, in which Ash exclaims, "I choose you!" after picking a Pokemon to fight in battle.
During the third case testimony of Moe Curls, he will make a parody of the A-Team. He will ramble the theme of the "C-Team", and the judge will address him on it.
Juan Corrida had his name changed in the Spanish version to Juan Rivera (probably after the bullfighter Francisco Rivera OrdoÃ±ez). This may be because Corrida means cum-shot or orgasm in spanish.
During Moe's testimony, Franziska will whip him to make him pay attention, which causes him to have some sped up text. Slowing down the text shows that he is reciting a clown-themed version of The Fresh Prince of Bel-Air theme.