adywan said:

So the ball droid (BB-8) isn't CG, but a real prop , as confirmed by Mark Hamill. In bet the whiners on the net that were saying the ball droid was "bad Cg" are going to be a little butthurt about this one ;)

https://www.yahoo.com/movies/mark-hamill-on-playing-with-the-star-wars-the-105015597302.html

Not only that but the people who were suggesting that a droid that was a ball with a head on top, wasn't physically possible, are gonna be surprised when they see that JJ actually had them build it.

Gods bless Mark Hamill, he is such an awesome guy...

Mark Hamill said:
The great thrill for me was watching the video of fans watching the trailer. Did you see that? Oh my god! I forget how happy this stuff makes a certain segment of our population. I mean, I really was moved to see these people that happy. It was wonderful.

This bit has made all my dreams come true...

Mark Hamill said:

I rightly assumed that it wouldn’t be our story, because we had a beginning, a middle, and an end. This must be our offspring and the current generation, with us there lending the kind of support that Peter Cushing and Alec Guinness did in the original.

...this new film is gonna be awesome. It's a done deal!