I found this 5-minute business plan video produced by Bloomberg. It’s a pretty good summary. I particularly like the way they make the distinction between the business plan for venture capitalists and the business plan for just running a company.
The professor also has a good take on sample business plans … and, by the way, the 500 sample plans they’re talking about, on the SBA site, are put there as a donation from www.bplans.com, which has all of them available in full text, for free.
I also agree with the emphasis on the executive summary, and the importance of the management team in plans for investors.