From a NY Times article "Obama's Rabbi"
On one of the days I (the reporter) was there, in early February, I was the only white Jew in the shul, and an old guy in front of me kept turning around and showing me the right page. There's a nudnik like him in every shul I've ever been to. I forgave him, though, during the Torah service, when a young man faltered over the blessings and looked mortified. "Not your fault, young man," the nudnik said. "The fire of the Torah burns so hot to where sometimes it just confuses your mind."