Well I've died a few times in fallout 3, in the start of it, worst way I've died? Suicide, put 10 frag, pulse, and plasma mines on the ground, put 5 frag, pulse, and plasma grenades on the ground, then I used the MIRV to launch 8 mininukes on the ground where I am standing on top of the mines and grenades.
Worst way I've died accidently? Fell through a buggy fallout 3 floor to my death.
Worst way I've died accidently? Fell through a buggy fallout 3 floor to my death.