I agree that it's ard to name just one....
Best overall experience- Tru in Chicago...their 10 course taster menu made 4 hours of dining fly by. First runner up--the Normandie Grill, Bangkok. (Wildeman, you're not the only one who, stuffed to bursting, sampled all the desserts!!!)

But boy, a frank at the Original Nathans, or the Moh Krab in one stall on Samui, or the heavenly curry from one ancient lady's pot off Silom sure make my mouth water.