The highly dedicated semi-fly just sent in another quality tardist package - GImageView 0.2.24, a slick image browser/viewer application based on GTK with quite a number of interesting features: tabbed browsing, animated GIF previews, thumbnail caching and more. Looking at the GImageView home page, it appears that there are quite a number of planned additions to this package as well.
Download:
GImageView 0.2.24 (tardist) - 5.3MB
xnview looks way better, and doesn't carry the GTK garbage.