I've been thinking about the speeds they are proposing..

If we go by this:

"US FCC used 200 kbit/s in their definition until march 19th 2008 after which it was scaled up to require a minimum of 768 kbit/s to be defined as broadband."

768 x 10,000 is 7680000

7680000 kilobits = 937.5 Megabytes. And 937.5 Megabytes or 7500 Megabits of data per second is around about the speed they are proposing..

That's 7.3GB transfer rate onto HD.

Is there a HD that has that kind of capability yet?

Just wondering, I don't know personally.