The rather pleasant looking guy on the left is Andy Martin, and, despite his smile, he is a definite nut-job. He is also the person who started the "Obama is a Muslim" smear that right-wingers love to pass around in email messages. The New York Times profiled him in an article that is dated October 12, 2008. This is from the article:
He is a law school graduate, but his admission to the Illinois bar was blocked in the 1970s after a psychiatric finding of “moderately severe character defect manifested by well-documented ideation with a paranoid flavor and a grandiose character.”
He is a filer of frivolous lawsuits, in fact, he was profiled by the CBS News show "48 Hours". This is from the article:
The CBS News program “48 Hours” in 1993 devoted an hour long program to what it called his prolific filing of frivolous lawsuits. He has filed so many lawsuits that a judge barred him from doing so in any federal court without preliminary approval.
Mr. Martin came to the attention of the Times when Fox News had him as a guest on a supposed "documentary". The article points out that many of the anti-Obama rumors on the Internet go back to Martin and an article that he wrote back in 2004. Of course, Fox News and its bloviators like Sean Hannity don't tell their viewers about Mr. Martin's background. If you know anyone who has sent you anti-Obama emails, you might want to send a link to the Times article to them.