Cruciverbalists rejoice! New York Times crossword editor Will Shortz, widely considered the best puzzlemaster in the world, is speaking tonight at Cal Performances. Shortz was profiled in the documentary Wordplay and is credited with modernizing and popularizing crossword puzzles with witty clues, aesthetically satisfying designs, and pop cultural awareness. Folks like Jon Stewart and Bill Clinton (above, with the puzzle he made in yesterday's paper here) swear by Shortz's puzzles, and you will too (if......