is a post at Atlas Shrugs
that goes into incredible detail about Obama's birth certificate. Overlays, heat maps, kerning - no pixel was ignored in the analysis. If you can summarize it in a sentence or two, please post a comment here.
They are trying to prove that Obama is not a natural born citizen and therefore not eligible to run for President. Someone at Daily Kos had produced a birth certificate proving that Obama's birth met all the requirements at the time to be considered a natural born citizen. Right wing bloggers are claiming the certificate posted on Kos is a photoshop.
As much as it pains me to link to such a wacko site, this World Net Daily article is actually a pretty decent summary.