Worst - nearly getting killed when an exploding tyre on the VC10 I was flying took out two engines, half the fuel system (lost 50% of fuel out of hole), 1 hydraulic system and punched a hole into the cargo bay.
Best - getting that aeroplane down safely with all 47 pax and crew alive and well.
No-one in a position of authority even said "thank you"(CO, Staish, BOI) but what really counted was the heartfelt words of thanks from the pax.