Vimeo has a page with examples of various product videos (some kickstarter projects) and puts them forward as examples of good practice for one reason or another.

I enjoyed watching them. Buying the product is not required, nor backing the kickstarter.

My favourite is dollarshave and freaker. I also enjoyed the new perspective on bible typesetting.

https://vimeo.com/blog/post/just-tak...reating-killer