Dean Olsher, who's writing a book about crossword puzzles, wants to pick your brain. Head over to his blog and tell him about the things you've learned from crosswords—trivia and facts you might not have picked up anywhere else. (The ANOA and OPAH? That Schoenberg was into ATONAL music?) Dean's offering a tempting prize (an Emily Cox and Henry Rathvon book) for the best anecdote—but even if you can't spin it into a good story, go tell Dean how crosswords have expanded the contents of your brain.