These are just a few:
Ctrl + 5 = Strikethrough text
Ctrl + ; = Inserts Date
Ctrl + : = Inserts Time
Home = Goes to end of row
Ctrl + End = Goes to end of worksheet
Ctrl + Home = Goes to top of worksheet
Ctrl + PageDown = Goes to next worksheet
Ctrl + PageUp = Goes to previous worksheet
Ctrl + Space = Selects whole column
Shift + Space = Selects whole row
Ctrl + & = Outlines selected cells
Tab or Right Arrow = Goes to next cell
Shift + Tab or Left Arrow = Goes to left cell
Ctrl + A = Select All
Ctrl + B = Bold highlighted selection
Ctrl + C = Copy selection
Ctrl + V = Paste the copied items
Ctrl + P = Print
Ctrl + I = Italics
Ctrl + U = Underline
Ctrl + Z = Undo
Ctrl + Y = Redo
Ctrl + F2 = Print preview
F7 = Spell and grammar check
F12 = Save as
Ctrl + S = Save
Ctrl + Mouse scroll = Zooms in and out of document

by Mike Shinn
Remote Engineer
mshinn@ciosolutions.com