Conan O’Brien hilarious moments with Jennifer Love Hewitt. In this video Love describes to Conan her love for the restaurant Sizzler and the famous all-u-can-eat salad and dessert bar. Jennifer Love Hewitt is an American actress and singer who has played roles in Ghost Whisperer, The Client List, I Know What You Did Last Summer, Heartbreakers, The Tuxedo, and Garfield: The Movie. Hewitt began her career as a child actress and singer, appearing in national television commercials before joining the cast of the Disney Channel series Kids Incorporated.