
Last August, comedian Louis CK witnessed something special. "In 27 years doing this, I've seen a handful of truly great, masterful stand-up sets," he marveled to his millions of Twitter followers. "One was Tig Notaro last night at Largo."
Prior to that night, Notaro, 42, had achieved success within stand-up circles with a popular podcast, a busy touring schedule and some TV-writing gigs, but such praise from one of mainstream comedy's most admired talents set her apart. In the days that followed, other comedians who were at that August show took to the Web to tell what they had seen. Notaro...