WASHINGTON - Fox News commentator Bill O'Reilly has lashed out at a CBC documentary featuring guests who were highly critical of his show. "Vicious attack on Fox News by the Canadian Broadcasting Corporation, totally out of any kind of bounds," said O'Reilly in his response Friday night to the Fifth Estate broadcast on Jan. 26. "How low will they go? We'll show you the tape and you won't believe it!" was another response found on the Fox News website. The Fifth Estate's website says the documentary examines the "war of words that's pitting conservative against liberal." "It's loud, it's raucous,...