For people-watching, this is definitely on the see-and-be-seen circuit. Fouquet's has been collecting anecdotes and a patina since it was founded in 1901. A celebrity favorite, it has attracted Chaplin, Chevalier, Dietrich, Churchill, Roosevelt, and Jackie Onassis. The premier cafe on the Champs-Elysées sits behind a barricade of potted flowers at the edge of the sidewalk. Today, it's owned by the well-managed hotel and dining conglomerate Lucien Barrière. You can choose a table in the sunshine or retreat to the glassed-in elegance of the leather banquettes and rattan furniture of the grillroom. This is a full-fledged restaurant, with a beautiful formal dining room on the second floor.