John Scalzi wrote a pretty lengthy blog post using video game metaphors as a way to describe straight, white male privilege to people who have a hard time understanding it (i.e. - straight white males). It's a pretty interesting metaphor, and fairly well thought out and described in the article.
He does mention wealth several times as one of a "player's" starting stats and how it affects the game, and several people discuss it in the comments in more detail. Some commenters attempt to make a case that wealth trumps straight white male, and not vice versa, which is an interesting topic, too.
Also, people raise the question of what should be done about this issue, above and beyond awareness.