In the end, the best way to create a great portfolio and demo reel is to follow your own judgment and emphasize the areas in which you really shine. This is a typical reel. This industry is competitive and if you show a demo reel that is like the one listed above then you will not look any different than anyone else. That describes your competition, too. The Headhunter discusses in The Basics and in his book .
Every employer needs something different.
It's up to you to find out what . To make yourself stand out, you need to know what you can bring to a specific company to help it be more successful. Once you figure that out, you can produce a resume and demo reel that will make the company stand up and take notice of you. In other words, a great demo reel shows off skills and abilities that are most relevant to a particular emloyer. You do not need to have a lot in your reel.