Cable mainstay Larry King's CNN show ends Thursday after 25 years. His successor, British talk-show host Piers Morgan, might be an unfamiliar face to many American viewers, but he's been a major player in the U.K. media scene for decades.

The cat-and-mouse game between WikiLeaks and its detractors continues. The site found itself without a domain name after its registrar, EveryDNS shut down WikiLeaks.org Thursday night, saying attacks on the site were threatening other customers. More…