Possibly the most infamous of the music videos, Kelly's Thriller was a project hinted at in The Making of... book, and released on the second DVD of Special Edition.  The story goes that someone noticed animator Kelly playing around one day, or practicing by making this, and insisted it be shown off.

The video starts with Hein's What Have I Done? and subsequent fleeing away from the mess he made in the Barrier Generator.  Unfortunately, he runs into Aki... and things get wierd.  Actually, what follows could be potentially described as Hein's personal Hell.  That we don't see what happens to him afterwards makes it seem that much more likely.

Thoughout, they dance and dance.  And thrust.  Sid inclusive.  Aki seems to lipsynche from time to time, despite the absense of singing, and I wonder if something was supposed to be there.  Anyway, all in all, they appear to enjoy themselves, so I guess it's a good thing.  Afterwards, they make funny faces and shuffle off.

The screen fades and they disparaissent, with a maniacal laugh (Vincent Price?) the four phantoms loitering in their place attack!

I can't really compare it to Michael Jackson's Thriller, since I only saw that once and some time ago.  I presume at least the music is similar, and probably the dance style.

Where can you find this little bit of TSW oddity?  Well, as I said, it comes on the second disk of the Special Edition.  If you didn't get the SE (or can't), you can probably find it elsewhere on the internet or file networks.