Casey is standing at the foot of the cliff, firing pitons up into the cliff wall, at about a 45 degree angle, so Sarah can use them to clamp onto while climbing. However, the pitons are shown embedding into the cliff at a 90 degree angle, which would be an impossible angle from where Casey is standing below.
When Chuck is calling Sarah outside Sneijder's office, his iPhone has the display light on when he is holding it to his ear. An iPhone turns its display light off when it is held to ear.
When Morgan is using a Superman punch across the aisles of the Buy More you can see the mat that he lands on in one of the angles whilst airborne.