Designing the user interface: text, colour, images, moving images and sound

Also just found this course at the UK Open University:

Why is the way something looks important? Text, colour, images, moving images and sound all interact to produce a user friendly environment within a user interface. This unit will help you understand the effect each software component has on the user and explain how a consistent and thoughtful application of these components can have a significant impact on the ‘look’ of final product.