Know how to run a spreadsheet? Want to learn how Mann, the CRU, et. al. did it?
Iowahawk doffs his jester's cap, picks up his keyboard and displays his mad day-job skilz, to show us how to make a hockey stick chart on our own. And for the advanced students, some 'exercises for the reader' to show how shaky that conclusion may be.
If you care at all about the AGW debate, this is the post to read this weekend. Even if you just read it as a gloss on the jargon, it's well worth the 15 minutes to do so.