Captain Kirk is out and Carrie Bradshaw is in for Priceline.com. A new campaign for the travel auction Web site from Hill Holliday, New York, features actress Sarah Jessica Parker in the voice-over. Pitchman William Shatner is off the air. The ads use animation similar to rival Hotwire (see photo at far left), to promote Priceline as a way to save money that can be used extravagantly at a destination. Directors: Jonathan Dayton and Valerie Faris. Illustrator: Sarah Jo Frieden.