I really want them, but squares are easier to work with.
The Design and Implementation of Pie Menus
There're Fast, Easy, and Self-Revealing.
Copyright (C) 1991 by Don Hopkins.
Originally published in Dr. Dobb's Journal, Dec. 1991, lead cover story, user interface issue.
http://www.donhopkins.com/drupal/node/98
More stuff at:
Home > topics > Software > Pie Menus http://www.donhopkins.com/drupal/taxonomy_menu/4/49/14
And here are some pie menus for Unity3D: http://www.youtube.com/watch?v=sMN1LQ7qx9g
And this explains the pie menus and visual programming in The Sims: http://www.DonHopkins.com/home/movies/TheSimsPieMenus.mov
And Creative Computing was a great computer magazine, too!
It always seemed wrong to throw magazines away, at least so long as they were packed up early as I prepared to move. About 1997 my computer magazines were not. After the books had been boxed, I'd had enough heavy lifting. Now few articles get read twice. Somewhere in a box in Orlando though there may still be a copy of Deskview X.
Currently Microsoft Office One Note uses them.
Here's a list of references for pie menus (the Dr. Dobbs article is cited):
http://www.cs.cornell.edu/boom/2001sp/bronevetsky/Circle%20M...
In fairness to Dr. Dobbs, they also hailed hypertext as the future about that time, and that one they nailed.