I recently had an exchange on SPSSX-L where someone asked about this link. I suggested the "stat's coach" in SPSS's help for SPSS users. But … I like the chart regardless, and it comes in handy when teaching multivariate stats. Check it out.
Another intersting version of the same thing was also on SPSSX-L. My apologies to the poster for not replying, but there was a request to explain the whole thing!
And I found this link on the SPSS blog: