Well, the death of my first 3e character fits this category.
In our 5th Age Dragonlance campaign, three of us were deep in a mountian cave. Our rogue had been killed off in the previous adventure (normally resurrection is all but unknown in DL, but we had gotten a piece of the Philosopher's Stone and made the true res potion from it as noted in the DMG) and, due to an ethereal mishap, his large bevy of equipment (including some important items and his awakened pet white rabbit Mister Jefferson) was now in the hands of our foe, the red dragon Pyrothraxus. The party for this adventure was:
Taliesin Steelheart (me), Human Mnk13 of Majere
Kilianginis, Qualinesti Elven Drd11
Celidon Annfwn, Aasimar Pal12 (from Oerth -- story in itself!)
Making our way in and navigating past an iron golem, we came to a large cavern riddled with holes In it was the pile of gear we were in search of. We KNEW it was an ambush, but made our way in, fearing we'd lose the items, needed for our main mission. Once we'd gotten to the gear, we heard a rumbling as out of the crvices poured a horde of goblins (400 in fact) and the hot breath of a red dragon wafted into the cavern. As the de facto leader of this team (a subset of our much larger party), I ordered Kilian to wild shape into a large, fast animal, had he and Celidon grab the important stuff, and sent the paladin, on the druid's back with what we needed. I told them I'd be after them right away (as a onk, I was really fast running, you know). It was the first and only time Taliesin really lied to his friends (the paladin would never have gone otherwise).
Pyro had been a thorn in their sides for years, game time, predating the other two's entries into the campaign. In particular, the dragon wanted Taliesin and the rogue (whose stuff this was) Garrett. Taliesin knew the other two would never outrun Pyro, and it was he that the dragon wanted, so he held back to give them time to get out of the mountain.
Dropping a grenade-like explosive I had to seal off the cave mouth the others had fled through so the goblins couldn't follow, I don't know HOW many goblins I cleared out with whirlwind attacks and the best rolling of my life. After a few rounds and a small mountain of dead goblins, Pyro himself starting acting, Monk SR saved me from the brunt of his initial attacks, but I was beginning to show serious damage. His breath weapon actually cleared out most of the other goblins, but singed me badly too.
By the time the few scraps of the goblin force started pulling back into their holes and Pyro was upon me, the others had made it out of the mountain and had yet to realize I wasn't coming. I managed to score a good round of hits on the beast, but to little avail (this was a 40 HD dragon, I was a 13 HD monk). I got a good last line in, cursing the dragon who'd made my life so difficult the past few years, and his jaws clamped around me, ripping Taliesin in half. What remains were left were the dinner of goblins, and the other to returned home with the potion to revive Garrett in the most ironic fashion.
(As a side note, however, the main force of the group recented finally battled Pyro and killed him, losing most of the group in the process. One of the original PCs from back in the same days Pyro first met up with us as 2nd level characters, the wizard Myrddin Lightbringer, finished him off, wielding -- via Tenser's Transformation -- the dragonlance of a fallen Knight of Solamnia. The last words Pyro heard as he was run through? "For Taliesin...")
The campaign in question is part of a much larger campaign which has went for eight years IRL and seventy years on Krynn. Myrddin himself was the grandson of my original druid Amergin Liath from the days after the War of the Lance, whose father was a knight, Kurgen Lightbringer, from our days playing the Chaos War. Unbenowest to us, those that survived Pyro are now but a few months from the events of the War of Souls, where Myrddin and others, now middle aged and high level, are likely to see their climax before a new generation arises in the era of the upcoming DLCS...