And I'd bet you can't have just one!
I went and took some photos in the greenhouse today for this thread. The photos aren't that great and the Haworthias have been neglected this summer so please don't turn me into to the plant police...
This is my oldest Haworthia ~ fasciata
and a close up of it aka Zebra
The one on the right is H. attenuata or Pearly Dots
The one on the left has lost its' tag but I believe it is H. tortusosa.
And a favorite H. limifolia aka fairy washboard