http://templates.services.openoffice.org/
You can also upload your own templates:
NB: you need an OOo account to upload files, if you've already an account (to access the Issue Tracker for example), you can use it.This Template Repository is a place for the submission of new templates made by you, the community!
You created a nice template? Submit it, get feedback and help others to be more productive!
Enjoy!
Let's discover the power of the community regarding creativity!