James Altucher goes all-in with his forecast for Dow 20K - seemingly holding nothing more than a low pocket pair. He tells Henry Blodget that people shouldn't be so angry (video) with his long-standing bullish call with all the metrics positive and planned buybacks by U.S. firms sitting as a huge driver for prices. The tale of the tape: At today's Dow, his uber-bullish call is for a 54% runup in about a year.