Folks living in the Denver area should be able to get CBS-East and CBS-West.
I live in the West Arvada area and upgraded to HD about a year ago. Dish informed that though the CBS in Denver was part of the O&O network and should be eligable, I lived too close to the Cheyenne, WY CBS and needed to get a waiver from them. I thing the range was within 100 miles.
I contacted the Cheyenne CBS affliate, told them I lived in Arvada, CO, had Dish Network and needed a waiver. The receptionist I spoke with said she gets the request all the time and knew exactly what to do. She obtained some basic information (name, address, phone) and said she would fax in the request directly to Dish.
Within 48-96 hours I had access to CBS-East (off of 61.5) and CBS-West (off of 148).
With that said, it's unclear to me how the recent supreme court ruling on distant networks will play into this....though from what I read so far, I believe there will be no impact.