Lefty Kreh's new book "Fishing Knots" (the one that comes with a DVD) shows a method of connecting tippet to leader, and of connecting tippet to fly, using hemostats (forceps) to help assist with the know.
You can see both online, including video here:
www.flyfisherman.com/videos/hemostatknots/
The video on the DVD that comes with the book is better than the one on the Flyfisherman site, but you still get the idea.