Hopefully you've had a chance to catch up on the latest episode of HBO's Game of Thrones, because it's just about all anyone's been talking about since Sunday night. And with good reason. Not only did the super-sized episode have a lot of ground to cover, with a massive battle sequence at its core, it also had a record number of people tuning in to watch it, either live or mere hours after it aired. How many people, exactly? On the order of 17.8 million. THR has a breakdown of the superlatives for "The …