A gentler kind of smack
Update 6/25: People seem to be getting the chronology wrong, so to set things straight: I posted the application here June 15th. Being busy at work, I didn't get around to posting the source code and API information. Amit posted those on June 16th.
Update 6/19: thanks to some kind help from Joe Holmes at Apple, the application should now work on older PowerBooks as well. Download version 1.1 below. Left/right are still reversed, but at least it should work.
Update 6/17: As you can see in the comments, there are some PowerBook models where this doesn't work; I'll post a fixed version in a few days.
After the (useless hack) SmackBook was released, some commenters were worried that giving the laptop a smack to the head might be bad for the hard drive, not to mention the soul.
Here's a gentler alternative:
... and this time around, there are only two steps: Download this file and run it.
(version 1.1)
If you also have the latest version of VirtueDesktops, you can click the "send notifications" checkbox and use it to change desktops.
Source code coming soon.
Thanks to Rune for the smacked-up MacBook icon.