Big Buck Bunny: many B characters, so B = Blender, so Blender is the big bunny.
B waking up from his sleep (thanks open source!).
3 evil animals coming to hurt B.
The 3 evil animals is other 3d softwares like Maya, 3dsMax, XSI. :o)
B must protects himself. Finally B fights against these programs and finally B wins.
Not so long ago I learnt that the CS Lewis books were based on the planets, and while I had read some of them, and quite enjoyed the stories, I never noticed the thing about the planet. Hence BBB could also have a meaning behind it, just like Robin Hood, Avatar and so one. Good one endi!
Further more to this intense discussion, the perception may lie to the viewer, in a pragmatic sense. This is one short that will no doubt withstand time, and parrallels will not necessary be drawn to endi’s one conclusion by right.