The dolly zoom

This is an example of one of my favorite shot types. When filmmakers use this technique I think it is very effective. Eg. When they use the dolly zoom in 'Vertigo' they use it for a phycological effect that really hits the audience when it happens. It can also be used when someone has a brain wave and this tells you that the things they just fingured out was bad or someone is in danger because of it. It is also used in horror films to show the physical effect of a moster/supernatural person on the physical surroundings.

To make the effective you have to either track into the object or person and zoom out at the same time or do the opposite to get different effects.