A fellow named Alex Frank has put together a pretty impressive web site at DontClick.it showcasing new (better?) ways to get user input using a variety of mouse gestures that eliminate clicking.
Although I don’t see the imminent death of clicking anytime soon, I really like his ideas. This is neat stuff, and used appropriately (maybe with Windows Presentation Foundation?) could really enhance the user experience.
Hop on over to his site and give it a whirl.