Free, Open Source "Photo Diary"

Hi!

I would have created this myself, but got 4 clients to take care of the same time before leaving on holiday this week (coding on the beach sounds fun)

Looking for some system I can just ad to my own site to allow me to create some kind of "picture diary", easy to browse, creating thumbnails, etc.

Want to be able to upload pictures to a new section of my personal site along with categories and ability to add notes to the images. Pretty much like one's MSN Photo's

Can found several online, but thought I'd check if any of you know a "cool" one, easy and fast to implement.