Yes, it's a must-have for me. Even though I'll buy the first iPad (because, according to some here, I'm a sucker), but if they come out with a front-facing camera next year, I'm upgrading pronto!
I'm deaf, and use relay service. Currently, when I'm on the go, I use text relay service. But with the iPad (with camera), I could make calls with video relay service. That is just too awesome for words!
And chatting with friends too!
The iPad is gonna be big in the deaf community if they incorporate a camera.