Everything sprite related. This page contains all information on sprite programming, and other sections such as the VIC, demo coding and game coding sections link to this page, rather than having own links to sprite articles.
Several of the articles above touch on sort routines, and Cadaver's “Rant 3” compares a few. The following pages focus purely on sorting.
There are also information about sorting available on the maths and algorithms page.
These are also available on the Demo Coding page.