This is Nuts! (Cow cannon)

In the Build (creative) world, Nathan spawns 250 villagers into a confined area, which launches mobs like a cannon.

Then he adds dispensers to automatically drop a continual stream of mobs into the cannon.

Cows now fire like a machine-gun...

Crashing to their death below...

So we placed hoppers and a chest at the crash site...

Then flaming blocks to yield cooked meat...

The inventory fills rapidly...

And yields ridiculous amounts of xp...

Later, we launched horses. They launched three times further, yet still survived the landing!

This is nuts!