She jokes. She writes. She acts. She hosts. She produces. Is she a budding tycoon? A whirling typhoon? Well, yes and yes. Chelsea Handler is at once a sexy, sharp-tongued comic, a highly-rated television host, a best-selling author, and, of late, a sitcom actress playing her own sister. Despite her self-deprecating humor and surgical skewering of all-things-celebrity, she has become a bona fide superstar in her own right.