rmb on the object and choose vertex.
Anyway heres a full list of ALL (default maya 8.5) shortcuts:
CODE
a Press SelectAllMarkingMenu
a Release SelectAllMarkingMenu
Ctrl a Press ShowAttributeEditorOrChannelBox
Alt a Press ToggleWireframeInArtisan
b Press ModifyUpperRadiusPress
b Release ModifyUpperRadiusPress
Ctrl b Press TemplateBrushSettings
Alt b Press CycleBackgroundColor
c Press SnapToCurve
c Release SnapToCurve
Ctrl c Press CopySelected
Alt c Press ToggleColorFeedback
d Press EnterEditMode
d Release EnterEditMode
Ctrl d Press Duplicate
Alt d Press SetFullBodyIKKeysAll
e Press RotateToolWithSnapMarkingMenu
e Release RotateToolWithSnapMarkingMenu
Alt e Press ToggleFBIKEffectorsRotatePinState
f Press FrameSelected
Ctrl f Press SetFullBodyIKKeys
Alt f Press FloodSurfaces
g Press RepeatLast
Ctrl g Press Group
Alt g Press HyperGraph_IncreaseDepth
h Press UIModeMarkingMenu
h Release UIModeMarkingMenu
Ctrl h Press HideSelectedObjects
Alt h Press HideUnselectedObjects
i Press InsertKeyToolActivate
i Release InsertKeyToolActivate
Ctrl i Press SelectNextIntermediatObject
j Press MoveRotateScaleToolToggleSnapMode
j Release MoveRotateScaleToolToggleSnapMode
Alt j Press ToggleMultiColorFeedback
k Press TimeDraggerToolActivate
k Release TimeDraggerToolActivate
l Press LockCurveLength
l Release LockCurveLength
m Press ModifyDisplacementPress
m Release ModifyDisplacementPress
Ctrl m Press ToggleMainMenubar
Alt m Press FullHotboxDisplay
n Press ModifyPaintValuePress
n Release ModifyPaintValuePress
Ctrl n Press NewScene
o Press PolyBrushMarkingMenu
o Release PolyBrushMarkingMenu
Ctrl o Press OpenScene
p Press Parent
q Press SelectMaskToolMarkingMenu
q Release SelectMaskToolMarkingMenu
Ctrl q Press Exit
Alt q Press SelectPolygonToolMarkingMenu
Alt q Release SelectPolygonToolMarkingMenu
r Press ScaleToolWithSnapMarkingMenu
r Release ScaleToolWithSnapMarkingMenu
Ctrl r Press CreateReference
Alt r Press ToggleReflection
s Press SetKey
Ctrl s Press SaveScene
Alt s Press ToggleFBIKEffectorsPinState
t Press ShowManipulators
Ctrl t Press UniversalManip
Alt t Press HyperGraph_DecreaseDepth
u Press PaintOperationMarkingMenuPress
u Release PaintOperationMarkingMenuPress
v Press SnapToPoint
v Release SnapToPoint
Ctrl v Press PasteSelected
Alt v Press PlaybackToggle
w Press TranslateToolWithSnapMarkingMenu
w Release TranslateToolWithSnapMarkingMenu
Ctrl w Press SoftModTool
Alt w Press whetwindow
x Press SnapToGrid
x Release SnapToGrid
Ctrl x Press CutSelected
Alt x Press SetFullBodyIKKeysBodyPart
y Press NonSacredTool
z Press Undo
Ctrl z Press Undo
A Press FrameAllInAllViews
Alt A Press DecrementFluidCenter
B Press ModifyLowerRadiusPress
B Release ModifyLowerRadiusPress
C Press SnapToCurve
C Release SnapToCurve
D Press DuplicateWithTransform
Ctrl D Press DuplicateSpecial
E Press SetKeyRotate
F Press FrameSelectedInAllViews
G Press RepeatLastActionAtMousePosition
H Press ShowSelectedObjects
Ctrl H Press ShowLastHidden
I Press SelectIsolate
J Press MoveRotateScaleToolToggleSnapRelativeMode
J Release MoveRotateScaleToolToggleSnapRelativeMode
M Press TogglePanelMenubar
P Press Unparent
Q Press SelectComponentToolMarkingMenu
Q Release SelectComponentToolMarkingMenu
R Press SetKeyScale
S Press KeyframeTangentMarkingMenu
S Release KeyframeTangentMarkingMenu
Alt S Press IncrementFluidCenter
V Press SnapToPoint
V Release SnapToPoint
Alt V Press GoToMinFrame
W Press SetKeyTranslate
X Press SnapToGrid
X Release SnapToGrid
Z Press Redo
0 Press DefaultQualityDisplay
0 Release DefaultQualityDisplay
1 Press LowQualityDisplay
Alt 1 Press FBIKReachKeyingOptionFK
2 Press MediumQualityDisplay
3 Press HighQualityDisplay
Alt 3 Press FBIKReachKeyingOptionIK
4 Press DisplayWireframe
Alt 4 Press SetFullBodyIKKeysSelected
5 Press DisplayShaded
Alt 5 Press ToggleFkSkeletonVisibility
6 Press DisplayShadedAndTextured
7 Press DisplayLight
8 Press PaintEffectsPanel
F1 Press Help
F2 Press ShowAnimationUI
F3 Press ShowPolygonsUI
F4 Press ShowModelingUI
F5 Press ShowDynamicsUI
F6 Press NameComLive_UI
F8 Press SelectToggleMode
F9 Press SelectVertexMask
Ctrl F9 Press ConvertSelectionToVertices
Alt F9 Press SelectVertexFaceMask
F10 Press SelectEdgeMask
Ctrl F10 Press ConvertSelectionToEdges
F11 Press SelectFacetMask
Ctrl F11 Press ConvertSelectionToFaces
F12 Press SelectUVMask
Ctrl F12 Press ConvertSelectionToUVs
Press SmoothingDisplayToggle
Ctrl Press SmoothProxy
Alt ` Press CreateSubdivSurface
- Press DecreaseManipulatorSize
= Press IncreaseManipulatorSize
[ Press GoToPreviousView
] Press GoToNextView
' Press SmoothingDisplayToggle
Ctrl ' Press SmoothingDisplayShowBoth
, Press PreviousKey
Alt , Press PreviousFrame
. Press NextKey
Alt . Press NextFrame
/ Press PickColorActivate
/ Release PickColorActivate
~ Press SmoothingDisplayShowBoth
Ctrl ~ Press SmoothProxyOptions
Alt ~ Press CreateSubdivSurfaceOptions
+ Press IncreaseManipulatorSize
Ctrl + Press SmoothProxy
{ Press PreviousViewArrangement
} Press NextViewArrangement
< Press ShrinkPolygonSelectionRegion
Ctrl < Press UndoViewChangeNameCommand
> Press GrowPolygonSelectionRegion
Ctrl > Press RedoViewChangeNameCommand
Up Press PickWalkUp
Ctrl Up Press CoarserSubdivLevel
Alt Up Press PixelMoveUp
Ctrl Alt Up Press mlTruckUpTool
Down Press PickWalkDown
Ctrl Down Press CreateSubdivRegion
Alt Down Press PixelMoveDown
Ctrl Alt Down Press mlTruckDownTool
Left Press PickWalkLeft
Ctrl Left Press RenderViewNextImage
Alt Left Press PixelMoveLeft
Ctrl Alt Left Press mlTruckLeftTool
Right Press PickWalkRight
Ctrl Right Press RenderViewPrevImage
Alt Right Press PixelMoveRight
Ctrl Alt Right Press mlTruckRightTool
Page_Up Press SmoothingLevelIncrease
Page_Down Press SmoothingLevelDecrease
Insert Press EnterEditMode
Return Press CompleteCurrentTool
Space Press ShowHotbox
Space Release ShowHotbox
Ctrl Space Press ToggleUIElements
PS: those buttons that have a release of some kind usually have a marking menu too, are a virtual slider or a disale on release toggle..
PPS: deleted the extra posts while i was at it.