Windows 7 Keyboard Shortcuts / Hotkeys

I was listening to TWiW [This Week in Windows] - and one of the topics discussed was keyboard shortcuts. I immediately started tapping around my keyboard and here is what I've come up with... Really useful!
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Windows Key +
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Tab = Aero [press Tab to cycle between Windows]
E = Windows Explorer
R = Run Command
F = Search
X = Mobility Center
L = Lock Computer
U = Ease of Access
P = Projector
T = Cycle Super Taskbar Items
S = OneNote Screen Clipping Tool [requires OneNote]
M = Minimize All Windows
D = Show/Hide Desktop
Up = Maximize Current Window
Down = Restore Down / Minimize Current Windows
Left = Tile Current Window to the Left
Right = Tile Current Windows to the Right
# = Quicklaunch
= = Magnifier
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In Windows Explorer
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Alt + Up = Go up one level
Alt + Left = Back
Alt + Right = Forward
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I think some of these will work on older versions like XP and Vista, go try it out on your PC/Notebook/Netbook and let me know how you like it.