The "Obama is a Muslim" issue
There have been various attempts, I think mostly online, to argue that Obama is really a Muslim. The silliest version is probably the claim that when Obama referred to campaigning in 57 states he was referring to the number of Muslim states. That one only works if you don't read the text of what he said, in which he says he has one state to go and isn't going to campaign in Alaska and Hawaii, making it obvious that "fifty-seven" was a slip of the tongue for 47. It also depends on not noticing that he in fact has not campaigned in fifty-seven Muslim states.
I recently came across a more interesting version by Daniel Pipes. His argument is not that Obama is a Muslim but that, from the standpoint of Muslim law, he was a Muslim as a small child, at a point at which he had a Muslim step-father whom he occasionally accompanied to the Mosque. If so then, from the Muslim standpoint, Obama is now an apostate, a Muslim who converted to Christianity. Under Muslim law, it is permissable to be a Christian (or a Jew or a Sabean--along with Muslims the four "peoples of the book"), but for a Muslim to abandon Islam is a serious, indeed capital, offense. Hence, Pipes argues, Obama might have problems dealing with Muslim leaders.
So far as I can tell, the argument is at least plausible. I am not sure what the Sharia rules are on the age at which a religious choice counts, but I am pretty sure that repeating the formula "There is no God but God and Mohammed is his prophet" is supposed to make one a Muslim, legally speaking, and it seems likely enough that a child who attended services at a mosque would have repeated that formula at some point.