Ah, video chat, blah. I think my roommate has it right, that really won't take off. You'll end up talking while looking up some one's nose. I know a lot of people were looking forward to that but I was kinda hoping somewhere in there that the rumor of free mobile me would be right (Though I didn't think it would be, it was getting to be a strong rumor).
I remember reading an article about why video calling hadn't taken off. It spoke of the difficulty of the situation due to being able to see the person, but not being able to see all of the person, so you completely miss all the gestures and movements that are part of face to face chat. So what you end up with is being able to see the other person, but it adding absolutely nothing to the conversation because all you see is their face. It also makes holding the device for a lengthy call more tiring, and there's something a bit unsettling about knowing someone can see you but them not actually being there.