If you see a good UI walkthrough - you probably didn't notice it (opens in new tab)

http://www.youtube.com/watch?v=8FpigqfcvlM&feature=playe...

The article hit the nail on the head: the best walkthrough is the one that it nearly invisible to the end-user, yet still accomplishes its goal of progressively introducing a UI to them in a long-lasting way.

https://news.ycombinator.com/item?id=4975416