OS X Dock menu

[jim sims]

Many moons ago, Richard Gaskin added an enhancement request to the  
'Quality Control' list - number 3339
"It would be handy to have a Dock menu for OS X, and perhaps the same  
syntax would also provide a right-click menu for Windows."

Is there currently any way to put a menu into a Docked icon? When  
holding the cursor down on the Mail icon in the Dock a menu appears  
(it also appears in the menubar under 'Windows' as 'OS X Dock Menu'
Anybody know the magic sauce that will let me do that?

sims