What's the Best Way to Launch a Physical Product?

You've brought over 80 products to market and some of them have been huge successes. What are the best or most effective ways to launch a physical product today now that there is crowdfunding? If it is crowd-fundable you would want to do a crowdfunding campaign before you'd start a company to make and sell it. You can use Kickstarter as a way to prove interest in a product and then go license it so it's really an interim step or a pre-launch step before one of the other two models.