Just noticed that. And is the screen in the floor used during OTC?

No, it's not

I think that BB8 and BB6 are tied for best graphics. I have some videos of BB6 on YouTube and if you look at the "to evict call" graphics you see barbed wire and hands and things like that which are really cool. This year the only fault that they have is the ending of the title sequence where it's in 2D. They should have 3D'ed it.

http://www.youtube.com/watch?v=il5zdg9Ol4k

Look at the "to evict CRAIG call 09016 16 16 02" graphics at the bottom of the screen.

Agreed. I can't really fault any of Big Brother's graphics from any series though.