Will circular runways ever take off?

I just saw a video on the BBC postulating the idea of a circular runway with all the terminal buildings in the middle.

What do our resident airline people think of it?

Existing thread, started earlier today, in MPSIMS:

http://boards.straightdope.com/sdmb/showthread.php?t=821682

Not if they’re on treadmills.

Since the OP is asking for opinions, and there is an existing thread in a more appropriate forum, I’m closing this.