buk.xxx is available too. I don't see much value in new (like .xxx) or country code (like .ki or .me) TLDs though. I own a grand total of one .us domain, the rest are com, net and org.
On Thursday they open up the field to anyone to register anything. Meaning you could get .bosp, .buk, .anything.
Of course you have to pay $185,000 (plus $25,000 quarterly) for the privilege. But then you can sell domains on your extension. Expect to see shit like drink.coke soon. And expect 99% of the people in the world to not realize that's a domain name. A lot of companies are about to waste a lot of money.