The Deniers present evidence that show correlation between sun-spot cycles and cosmic rays.  Their data are of a similar nature as the CO2 crowd - they do not provide cause and effect.   Does it show convincing evidence that the IPCC has intentionally ignored? 

DRIVERS OF CLIMATE CHANGE by Deniers

On June 29, 2007 at the Lavoiser's Group Workshop in Melbourne, Austrailia, David Archibald present a summary paper titled "The Past and Future of Climate" as to the impact of the sun on warming cycles (click here for copy). You can watch his presentation on YouTube - REAL Temperature Changes, Solar Cycles, Cosmic Ray Cycles, Colder Weather is Coming. Unfortunately, his arguments are not convincing.