camera angles

Try to find good examples of camera angles used to create atmosphere or alter the meaning of a scene or shot. Consider viewpoint, relationship with the characters on screen, status of the character on screen, suspense, tension of expectation. Does it create a particular feeling or mood?

I have chosen Psycho as a clear example of the use of camera angles. 
In frame 1 shown below we can see Norman Bates and his stuffed birds from a low angle. This is the scene where we can first see that Norman mental state might not be very sane. The low angle is unnatural within the scene, but show him as a threat, emphasised by the menacing wings of the owls behind. 
The second shot, frame 2, shows Lila Crane in the shower from a high angle, and the perspective allows to see that someone has got into the bathroom. The camera angle helps to imply how fragile she is in that moment. Suspense is created as the main subject is giving her back to the peril. 
Frame 3 shows Norma Bates with a knife from a very low angle. This is again not natural point of view. Nothing in the scene would be located there to help the angle to be a POV from a subject in the scene (Lila, the shower head, Norma bates) but it makes the killer look bigger and more  frightening. Lila would be in front of Norma's character and is not shown. These scene is accompanied by the famous music that creates the terror environment. 
Frames 4 to 6 are taken from a high angle, and it is clear for the viewer how powerless is the woman against her killer. The frames are maintained very little time and there is a great deal of action. The scene achieves that viewer would feel anxious.