So the cat's out of the bag. The real reason Tim's videos are so good is because his hot blond assistant keeps us focused on the task at hand. In this fine video, Tim shows us the virtues of tippet rings with the help of his assistant who knows the importance of being seen but not heard; if you watch carefully though, you will see her roll her eyes at some of Tim's comments. Clearly, she doesn't fish.
Sharpen your hooks.