SPECIAL PREMIERE: Game of Thrones ended last Sunday, with viewers still debating the effectiveness of the finale, and HBO still lamenting the loss of its biggest franchise. To that latter point, HBO tonight fills the time slot formerly occupied by Game of Thrones with this behind-the-scenes special. I especially like the title, The Last Watch, because, for Thrones fans, that’s precisely what this is. Until, that is, the inevitable spinoffs begin spinning off. Meanwhile, we have an illusion-shattering primer on how this massively ambitious fantasy series was filmed – including those dazzling flying sequences with Daenerys and the dragon, which are much less dazzling in rough-cut form.