On Sun, 16 Jun 1996, Kergma, The Chaotic Trickster wrote:

There are 6 glasses, 3 of them are filled with wine in the following order

        empty   empty   full   full    full    empty

By only touching or moving *one* glass, arrange them so they are thus:

        full    empty   full   empty   full    empty

Duh.  Pour the fourth one into the first.

Kendra> put two on the bottom, like
      > oo
      > then two more on top, angled in such a way so that both are 
      > touching both coins, kinda like
      >  o
      > o o
      >  o
      > only all together...then put the 5th coin upright in the middle 
      > of the top two coins.

Yup, you got it ;)

Nope.  If you do that, the third and fourth no longer touch.  In fact, I
don't think this one is possible.