It wasn't music but mudslinging that brought a national news team to Memphis Thursday to cover what "NBC Nightly News" anchor Brian Williams called one of the "hottest and dirtiest races of them all." Williams broadcast live from Beale Street, entering the Senate showdown between Democrat Harold Ford and Republican Bob Corker only to get caught in the middle. Advertisement Corker backers complained that the network was favoring the Democrat by broadcasting from what most consider Ford country. "It's such a crucial race, and the emotions are running so high," said Williams. "I just read an e-mail in the trailer...