A couple good places to look for Business Plan Templates are:

• The US Small Business Administration has some info and templates on their Write your business plan page
• Score – Business planning, finance, sales, marketing, and management templates & guides.
• Business Plan Handbook – Reference for Business/Advameg contains the first 11 volumes of the Business Plan Handbook series, a compilation of business plans for small businesses.
• More Business – Free online sample business plans for various industries.

Entrepreneurship: Business Plans / Books is a Business Library guide that provides in-depth resources.