If you've ever attended a gallery opening, bridal shower, book signing, rehearsal dinner or even a bar mitzvah, you've probably had a catering experience. When you attend an elegantly appointed wedding reception or a plated fund-raiser with food as tasty, if not tastier than the local dining hot-spots, you almost definitely have a catering team to thank. Catering seems pretty straightforward and simple: You cook some food and serve it, right?