I found this article interesting, about the Magical Negro (it’s OK, Spike Lee has used the phrase), the all-wise black person who shows up to save some floundering, clueless white guy in various movies and books.
http://www.strangehorizons.com/2004/20041025/kinga.shtml
The issue is briefly also raised here, along with the equally irksome Magical Retard.
http://ace.mu.nu/archives/077339.php
The Onion A/V Club also kicks in:
http://www.avclub.com/content/node/59258
Magical Chicks also occasionally fill this void, as in the Keanu Reeves howler Sweet November. From the first article I linked to:
“Here are what I call the Five Points of the Magical Negro; the five most common attributes:
- He or she is a person of color, typically black, often Native American, in a story about predominantly white characters.
- He or she seems to have nothing better to do than help the white protagonist, who is often a stranger to the Magical Negro at first.
- He or she disappears, dies, or sacrifices something of great value after or while helping the white protagonist.
- He or she is uneducated, mentally handicapped, at a low position in life, or all of the above.
- He or she is wise, patient, and spiritually in touch. Closer to the earth, one might say. He or she often literally has magical powers.”
Note that except for the first one, the rest fit Charlize Theron’s character in that movie to a T.