My DM definetly likes BIG....
My group (a lich necromancer and myself, a dwarven barbarian) just destroyed this evil cube type thingy that had tried to posess my partner earlier, but I beat him to near death and took it from him.. but anyways, we entered the cubes home plane, and fought it there, and killed it. Causing a HUGE energy backlash in the prime plane, and THEORETICALLY destroyed the cubes home plane. But uh... then I died when the tower we were in collapased due to Tiamat, who the Cubes had previously imprisoned, beat down the tower with her tail.