This is a guest post by David Alzofon about a colorful, loud high-stakes poker player, Mark Sherman, who frequented the San Francisco cardrooms in the 1980s. Here's David's bio: David Alzofon grew up in the San Francisco Bay Area where he spent 20 years slogging away in the salt mines of Silicon Valley. During a brief period of unemployment in the mid-'80s, he chanced to come across ...