Not too in depth (mostly boring) but anyway...
Gears of War
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'A':
tap: to roll
hold: to run
near cover:take cover
while in cover: release cover
While in cover: 'a' + LT - depends on direction (either hops over barricade or moves to a new barricade)
'b'
melee attack
'RB':
->if weapon is not full, reloads.
->if reloading (you can get a bonus, otherwise a penalty)
'y' - focus on key ally (Dom)
LT - zooms in (showing cursor)
'x' - pickup ammo/weapon, revive ally
'd pad' weapon select
start - pause/unpause
Character controller
Left Thumb -
moves the character according to the polar co-ordinates
When moving the pitch does not reset
Right Thumb -
x-axis: rotates the cameras yaw (interestingly it also rotates the characters yaw).
y-axis: rotates the cameras pitch (restricted)
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Spiderman3:
Left Thumb -
moves the character according to the polar co-ordinates
When moving it resets the pitch (unless overridden).
Right Thumb -
x-axis: rotates the cameras yaw
y-axis: rotates the cameras pitch (restricted)
####
I am partial to the gears system myself