In Heroes 4, which creature death animation is the most beautiful and amusing?

Leprechauns!

Exactly. They are the funniest. When they die, they get sucked into their hats.
And the most spectacular one is the ogre. They turn into ashes.

Added 1 minute ago

No, they all have their own unique animations...
Knights fall on their backs, priests fall face down, some fall sideways, some bend their knees, etc. =)

And Necromancers split into bones; I like finishing them off with lightning to the head.