It's Birthday Week, and so we want to know: What was the very best birthday shindig you ever attended? Was it far back in the recesses of childhood, involving a pony and a spectacular cake? Was it a more recent affair, perhaps with a terrific meal and some very good friends? Was it your birthday, or someone else's? What makes a great birthday party... great? Tell us... we love planning a stellar birthday party, and it's always so delightful to hear people's stories of great parties.