Our TPK is about the most traumatic ending to a story I have ever experienced.
I had just got my beloved cleric – Cedric the Green – to level 8. We were in the middle of a side-quest to solve a murder when the local thieves guild caught wind of what we were up to and ambushed us. Our GM, Dave, had the mooks target Cedric first. After he went down, the rest of the party shortly followed. Dave thought it was funny but the rest of us were devastated.
I was so upset that it was a year before I played again.