Abstract thumbnail interface?
- libgnome for desktop
- eggpixbuf for embedded
- whatever maemo uses?

Dates-style zooming interface
- "small" thumbnails, depending on screen size. (calculate from DPI?) ~24 on zaurus?
- "large" thumbnails, 6 to a screen
- row of large thumbnails with preview
- fullscreen image, scaled to fit
- zoom into image

When deleting JPEG files, look for matching RAWs and ask to delete them too

Toolbar: fullscreen, zoom in/out/1:1/fit, show more image info

Show basic EXIF in statusbar