GNU Go is one of the strongest Go programs around, and MoyoGo lets you play against it.

Only the most basic features are supported yet, but the intention is to support most of the GTP protocol in the future.
  You can use any image as a board skin. Load a JPEG, BMP, GIF or PNG or drop it from a folder or a web page.

SGF can be pasted from the clipboard or dropped from a newsgroup posting or web page link.

  This is the "human hand" cursor.
It is an option, when playing against GNU Go.

The hand belongs to Kamil Budzinsky, the author of "Almost Sente".

I could not find a screen grab utility that could capture large custom-cursors, so I had to make an actual screen photo.

The hand's transparency can be adjusted.