I just found a neat tool for OS X users who deal with DDS textures. It's a Quick Look plugin which lets you preview DDS files from the Finder, without having to open Aorta. Browsing a folder full of DDS textures is as easy as browsing PNGs.
Installer package: http://marginal.org.uk/QLdds_110.pkg
Source code and info: https://github.com/Marginal/QLdds