Just throwing this out there to get people's feedback on whether this is real or not, the guys at http://www.devilsworkshop.org/enable-google-adsense-analytics-integration/ posted a link to a Google Docs spreadsheet calling it an official "Interest Form" for combining AdSense and Analytics http://spreadsheets.google.com/viewform?key=pD9DqwPQLWy_y9v1JWdDFSQ I haven't seen it discussed here yet so is it legit? If anybody else has used this successfully I'd like to know too.
It seems to be legit - taken from the official adsense blog (adsense.blogspot.com). It's the most recent posting at the moment.