LOS ANGELES - The creator of "Desperate Housewives" told jurors Monday he thought he had permission to tap the head of Nicollette Sheridan but acknowledged the incident created a strained and awkward dynamic with an actress he considered smart and funny.Marc Cherry testified during Sheridan's wrongful termination trial that by the time he hit Sheridan in Sept. 2008 - he calls it a tap for artistic direction, she contends it w...