I've been having a lot of trouble finding a good batch image uploader. Finally, I decided to have an attempt at writing my own one. It does exactly what I want it to do - automatically create thumbnails, allow me to add a title and a description, and lastly, appear in the “Browse” section of the uploaded images.
Hopefully it will come in handy to some of you :)
Check it out at: http://www.nicksmit.co.za/wordpress/?p=751