Things have gotten a lot stranger since we last checked in on the world of Half-Life, and either the "fumes" are getting to us or the Headcrabs have learned to sing and dance and are now more concerned with entertaining humans than eating them!
The Michigan J. Protocol was created by Zachariah Scott, with the help of a few friends, and this is why:
I normally avoid doing a video like this, but the demand was too damn high!
Public demand for a dancing headcrab...who knew?!
--via Obvious Winner