The best high class sheeet wouldn't know the meaning of the word "buffet". ("Self-service? What is this, a freaking Texaco? Can I get a microwave burrito while I'm at it?")
Probably the most insane lunch I ever had I paid for. It was probably around $120 a pop. The Hotel Cipriani next to Venice:
http://www.hotelcipriani.com/web/ocip/hotel_cipriani.jsp
Everyone there had some international accent and brought their nannies and servants to handle the whole family. I thought it was a corporate family getaway for international arms smugglers.