http://xkcd.com/980/
Click on it to make it bigger. There's a number of errors (some of them noted here: http://www.reddit.com/r/comics/comments ... kcd_money/), but one thing I just spotted was:
"Amount needed to live comfortably off investments: $4,090,000"
There's a lot of interesting stuff here. Especially the differences in wages and the such. I'm still working my way through it.
Edit: Also, jeez, the prices some people pay for useless possessions (collections).