A current project of mine is to catalog several hundred digital photos, and include the date and time from the camera. That metadata is included in all photo image files, but I couldn't see myself cutting and pasting it from say, Windoze Explorer (aka Exploder) screen shots, one item at a time.
What I hoped to find with google was a command-line thingy that would let me do something like "show metadata from *.jpg > myfile.txt"
What I found was a really extensive utility called "ExifPro" which not only exports metadata nicely, but does many many things you may want to do with your pix. A feature-rich gui.
It was developed by Michal Kowalski at Pac Bell circa 2000, and apparently he still maintains it.
I found it here. After a bit of googling.
I know that The Gorn has been a photohead. Maybe some others will be interested as well.