YouTube: Swan Lake (Alternate Endings)
I like Matthew Bourne's ending best. Anyone who has known a bevy of swans will tell you that they can be nasty birds, which attack intruders with viciousness, not sweet young things in tutus on tippy toes. Bourne's birds are vicious. Of course, the traditional swans are actually young maidens who have been turned into swans. And we all know that young maidens are always sweet and innocent.