Apple has managed to offer three great views in iTunes. There is list view, which is just the standard multi-column view. Then, there is album view, which is similar to list view, but separates the lists into groups based on their albums, as well as showing the cover art for each album on the left side of the screen. Finally, there is cover flow, which lets you browse by primarily viewing the cover art of each album.
Traditionally, switching between these is done by bringing the mouse over to the top-right of the iTunes window and selecting one of the three icons, or from the View menu. However, this can also be done with some quick keyboard shortcuts.
To enable list view, press
.
To enable album view, press
.
To enable cover flow view, press
.