This deal isn't available in all areas but it is def worth the time it takes to call and see if your area is participating.
Comcast is offering free HBO with Comcast for 12 months in limited areas. It will self terminate after the 12 month period. You will need to call in order to keep the service after the promotional period. Requires subscription to Comcast Digital Cable at regular rates and may not be available in all areas.
Call 1-888-865-3193 and use reference code: HBO0703. The phone number listed is specific for promotional offers.
Good Luck- hope it works for you! Most of our favorite shows are on HBO!