This week: Turkey president Erdogan builds a gigantic thousand-room house. New Yorkers become eligable to register .nyc domain names, and Mayor Michael Bloomberg preregisters a ton before scalpers get them. (LWT registered a few of their own: michaelbloombergisawiener.nyc, tinytinymikebloomberg.nyc and bloombergeatsbabycornasifitsrealcorn.nyc). A brief look at the Salmon Cannon (5m), a device for getting fish up stream past hydroelectric dams. (The show kind of goes nuts with the idea.) Main story: State lotteries, their problems and abuses (15m). And Now: People On TV Misunderstanding What The Term "Spoiler Alert" Means. And, finally, this is the last episode of Last Week Tonight for the season, and the year. They bring back the puppets, the Scottish Unicorn, the Space Sex Gecko, and Breakdancing Lincoln for the closing credits. G'night, John Oliver.