This is a simple example of the use of Views hooks in the template.php file of a theme. It is written for use with Drupal 7 and Views 7.x-3.0-beta3.
In this project, a page contains a View which must display one, two or three results/rows. Each row contains an image and and body text. The final output display must to stay roughly the same size regardless of the amount of content. To make it all fit and allow for custom theming/CSS, I decided to change the Image Style and Row Class depending on the number of results.