Project Management Docs — Templates organized according to PMBOK process group.
Entrepreneur.com — Project Management templates as a part of their Operations Forms & Templates.
Chandoo.org — Project Management with Excel
ProjectManagement.com — Project Plans, Deliverables, Checklists and presentations (registration required).
PMI’s Tools and Templates — Tools and templates from A Project Manager’s Book of Forms by Cynthia Stackpole (members only)