After "upgrading" my 14" iBook with SceenSpanningDoctor to enable monitor spanning, the ROTATE menu appeared on my external Xeorx 1280x1024 monitor. Awesome.

The only downside is speed on the external monitor. Any dragging of windows is very choppy; probably because the CPU is swithing the X and Y axises on the fly, affecting performance.

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--Brad

On my G4 iBook I was able to do this by hitting "option" when launching the pref pane. But after rotating I couldn't accesse the option again - I was stuck with an upside-down display. Finally, i was able to undo the action by restarting the computer and repeating the procedure.

I read about this hint on /. in an article about Apple's new patent for a tablet computer... although who knows what the patent is *really* for.