In 1997, 685 kids were rushed to hospitals after watching an intense Pokemon episode that caused dizziness, vomiting and seizures. The episode in question was #38 from season 1. On this episode, Pikachu uses an electric shock on a missile, causing the screen to flash red and blue rapidly.
The Japanese have trouble with the letter L, of which "Donald McDonald" has two.
Here (http://imgur.com/XiSZ3Jm.jpg) is an image of the Japanese phonetic alphabet. You will notice the third column from the left is the letter R.