Eberron (two of these are mine, two of these are the other player's):
Vel, the human ranger with a dinosaur companion, died when the carraige he was driving could not make the left turn at top speed downhill. He tried valiantly, but you canot cheat death with only a +3 on your skill check.
Corden d'Orien, the rogue of House Orien, died in the night after the crash, failing to avenge his fallen comrade. He survived the crash (Evasion!), but would not go gentle into that good night. Instead, he went armed.
Uther, the dwarven paladin, died on the Day of Mourning. He survived a warforged troll's rend, being fireballed in midair while falling off an airship, leaping from ship to ship (in full plate, no less), and fighting 25 vampires (in daylight with a clear advantage, but even still). He could not, however, save Cyre.
Botch, the warforged rogue, died on the Day of Mourning. He shot down four airships with a ballista and single-handedly defeated a warforged Titan in such a manner that its corpse blocked an entire gate, but he could not, in the end, save Cyre.
In the game that I run:
Kalil, from a spike trap underneath the city of Donnerich.
Kalil, from an explosion fighting a hulking chain undead fish.
Kalil, from being at ground zero of a firestorm.
Kalil, from a self-imposed dagger to the throat.
(There's a special realm my players go when they die, since I run two two-person games and don't want them to not take risks. So far the other three have avoided it. Kalil's gone there four times due to overestimating his abilities. He's paid the price, too -- max HP reduced, curses, and now he's drenched in terrifying plot.)
The Eberron ones were the only permanent deaths.
If we included death by campaign stagnation, my list would be much longer.