A list of Blender shortcuts

Contexts and Sub-Contexts
Logic : 'F4'
Shading : 'F5' >>> Lamp, Material, Texture : 'F6' >>> Radio, World : 'F8'
Object : 'F7'
Editing : 'F10'


Views
Top view : '7'
Bottom view : 'ctrl+7'
Front view : '1'
Back view : 'ctrl+1'
Side view Left : '3'
Side view Right : 'ctrl+3'
Rotate view : 'drag MMB' or '8','6','2','4' for discrete steps
Camera view : '10'
Perspective/Ortographic view : '5'
Transform properties : 'n'
View animation : 'alt+a'
Undo menu : 'alt+u'

Actions
Actions menu : 'spacebar'
Delete : 'x'
Duplicate : 'shift+d' (new copy of mesh) or 'alt+d' (same mesh, new object)
Extrude : 'e' >>> constrain : 'MMB' or 'x/y/z' >>> in discrete steps : 'ctrl'
Flip : 'm'
Grab : 'g' >>> constrain : 'MMB' or 'x/y/z' >>> in discrete steps : 'ctrl'
Insert keyframe : 'i'
Make Parent : 'ctr+p' (parent=last selected object)
Move to layer : 'm'
Redo : 'shift+u'
Render : 'F12'
Resize : 's' >>> constrain : 'MMB' or 'x/y/z' >>> in discrete steps : 'ctrl'
Rotate : 'r' >>> in discrete steps : 'ctrl'
Save file : 'ctrl+w'
Save image : 'F3'
Slice : 'ctrl+r' ('LMB' to confirm position)
Track : 'ctrl+t' (tracked object=last selected)