Gabe Kaplin @ Carnegie’s in Ballard - “Former “Welcome Back, Kotter” star and formidable tournament-poker player talks up his new book, “Kotter’s Back: E-mails from a Faded Celebrity to a Bewildered World.”" So is being all self-knowing and ironical in the book title enough to make one buy it? I’m not sure. As part of the Bewildered World, I don’t recall getting email from Mr. Kaplin. Spam filter, possibly. This whole thing strikes me as odd, which intrigues me…