Yes.
This is way better.
All of those kind of software feel very impersonal. You're looking pretty far off the camera's axis...it kind of looks like you're both being interviewed by 'Dateline' or something. Add to the fact that you have a big screen with other programs and distractions and conversations always end up feeling like speaker-phone conversations; stilted, sporadic, and somewhat uninteresting.
Facetime, on the other hand, is pure Star Trek. It's a small piece of glass right in front of your face that's light enough to move anywhere and hold in any position. The camera is closer to the screen so you feel like you're talking TO the person. The 'flip-to-back camera' feature lets you easily show things off. I walked around the house using it, showing my wife things I was talking about. Even when I iChat with a small laptop, that would be cumbersome and difficult.
Skype and iChat feel like you're video chatting on a computer.
Face-time feels like you're chatting with a person.
That's a slight semantic change that makes a HUGE difference. Computer video chatting is a house cat. Facetime is a lion. They're so far apart from each other it's startling.