As it did last year, Apple is extending the Thanksgiving vacation time it gives to some of its workers for 2012, according to an email memo from CEO Tim Cook. "To recognize the efforts that made this amazing year possible, Iím happy to announce that weíre extending the Thanksgiving holiday once again this year. We will shut down with pay on November 19, 20 and 21 so our teams can spend the whole week with their loved ones," he writes.