Bart Simpson
Unfortunately, there isn't much out there on the origins of the Bart Simpson. The move was clearly named after one of the main characters of the cartoon The Simpsons. Early associations of the move link the move to dancer Buddha Stretch, who you can spot in the music video below. It can also be seen in the music video for the song Creep by TLC (gif to the right).
In Action
This is the music video for Michael Jackson's song Remember The Time. He and his dancers perform the Bart Simpson at 7:03.
How-To Instruction
I think this video breaks the move down very well, but when they actually perform the dance it's kind of comical. Refer back to Michael for how this dance should look.
Songs To Practice To
1. Do The Bartman by The Simpsons ft Michael Jackson
2. Nothing But a G Thang by Dr. Dre ft Snoop Dogg
3. Ms Jackson by Outkast