Taking another look at the data, Holland in a piece titled The Marketing of Global Warming in On Line Opinion finds data cherry-picking all over the place.
Here's the now-discredited scary hockey stick (no longer defended by anyone due to erroneous stat analysis, plus the Southern Hemisphere is, of course, entirely different):
Here's the unmanipulated graph:
Holland's piece, with many more graphs and analysis, is here. h/t, An Englishman's Castle.
Related: The Sky is Falling. And I see that the Pope, a far more scholarly sort than the pompous, thesaurus-addicted Al Gore, is a skeptic, but where's that Pope link I had earlier? Got to find it...OK Here it is.