It's official: Kristen Wiig is joining the cast of the Anchorman: The Legend of Ron Bergundy sequel, Anchorman: The Legend Continues. And we couldn't be more excited -- and either could her movie mates. Director Adam McKay expressed his glee on Facebook on Monday (January 4), saying, "Kristen Wiig is officially on board for 'Anchorman 2. Couldn't be...