Comcast Service for Non-Cap Bandwidth

[Nabil Sharma <nabilsharma () hotmail com>]

NANOG List,
I am developing streaming video service, and seek your feedback... I would like to pay Comcast forward so that 
accessing our site does not count against user's bandwidth caps, similar to the arrangement made with Microsoft Xbox.
Does anyone know the name of this service? Is it something the sales contact at http://as7922.peeringdb.com/ can 
provide?
Thank you for your time.
Sincerely,
Nabil