QUOTE (madmanchan @ Nov 26 2008, 04:22 PM)

That depends.
If you are using a tool that does not have its own special panes (examples of such tools are the Zoom tool, White Balance tool, etc.), then you can navigate all the panes using Cmd-Option-{1 through 9}, where Cmd-Option-1 is the Basic pane and Cmd-Option-9 is the Snapshots pane. On Windows, replace Cmd with Ctrl, and replace Option with Alt. Note that on the Mac, Cmd-Option-8 is usually mapped to universal access by Mac OS X, so unless you change this preference in System Settings, you will not be able to use Cmd-Option-8 to access the Presets pane.
If you are using a tool that does have its own special pane (e.g., Adjustment Brush, or Spot Healing) then you can press a key like H (to access the Hand Tool) which will go back to the regular panes.
Ouch, when you have shortcut keys that need two hands you might as well use the mouse. Try doing ctrl/alt/6 to quickly get to the vignetting pane!
Shame that ACR can't use perhaps shift/# to get to any of the adjusment panes whether using the normal or special panes. Would make life easier rather than having to keyboard shortcut out of local adjustments
then keyboard shortcut back into the required pane.
Give you an example, on a given picture I will usually do basic corrections, then vignetting if needed, then local corrections. When working through hundreds of proofs from a wedding as fast as possible it would be nicer to have a more streamlined shortcut system.
Just a thought.