Planning on watching the Super Bowl? Care to make it interesting? It’s the most bet-on game of the year, and Vegas book makers are offering an unprecedented opportunity to bet on anything from whether the Seahawks or the Broncos will win, to who will kick the longest field goal, to what color Gatorade the winning coach will be showered with. Las Vegans like to think we’re savvy when it comes to knowing a sucker bet when we see one, but say, just for fun, you want to place some bets on the Super Bowl. Do you know a prop bet from a point spread?