Heather Locklear is profiled. The popular actress first achieved fame as Sammy Jo on “Dynasty,” and has since starred in “Melrose Place” and “Spin City.” Here, her career and marriages (to rockers Tommy Lee and Richie Sambora) are spotlighted. Included: insights from Michael J. Fox; William Shatner; Aaron Spelling; and TV GUIDE's Daniel R. Coleridge.