Two experiences that come close for me:
1995 Guigal La Mouline shared by Sunnylea57. The most flawless, complex and complete wine I’ve had.
1967 D’yquem that my wife sourced as a 50th birthday gift. It was incredibly alive, fresh and vibrant. While I enjoyed the Guigal more just the experience of the latter with close friends, along with knowing my wife (Not a wine enthusiast) hunted one down made that a special experience.