Now before I talk, I want you guys to watch this. JL and his team on his private (I think) server worked with Docm to build this: Why can't this be in vanilla?
they really should have chosen a different name.... that just ruined a lot of their custom work i do really enjoy that revolving door, though. lol that is awesome, are those things mods? or can you make that happen in normal minecraft?
If you check out the behind the scenes video, I think there is. Or just check out the video on youtube to see if it is in the description.