1. Only person in Cathay First SYD-HKG. Didn't sleep at all and was pampered from beginning to end.
2. Concorde LHR-JFK. Although I got caught up in the strike mess, it was still a very cool experience. Next time I felt that many G's was in Kanebear's car in Houston.

Still have my ticket and certificate on my wall.
3. British Airways First LHR-BKK, first longhaul first class experience. The FA was like a nanny and took care of everything I needed (which wasn't much).
4. Cathay HKG-DPS through a typhoon. Found out that we were one of the last flights out that day before a typhoon decimated Hong Kong airport so we basically flew through most of it before hitting a high enough altitude to go over it. Threw us around like a ragdoll. Most long term turbulance I have encountered.