What is a good way to use a smartphone as a webcam?

I have an HTC incredible smartphone and would like to know a good application to be able to use it as a webcam...

also, if you include a link to a software program to do such a thing, do i need to install both software clients on the smartphone AND computer, or just one or the other?

Thanks in advance... also, best answer will definitely get 10 pts.What is a good way to use a smartphone as a webcam?
Skype, oovooWhat is a good way to use a smartphone as a webcam?
sorry dude. HTC sucks. u should get either samsung galaxy 2 or iphone... they got better cameras. lol