Bill T. brings up another interesting point. How many in the forum with Comcast receive WB HD and what is your location? I'm in the Philly area and I'm pretty sure we don't have a WB HD channel.
As far as ESPN HD is concerned in the Philly area, channel 173 is vacant, but, apparently available when the Comcast Philly execs decide to bless us with ESPN HD and bring us up to speed with other areas in the country.

I live in Atlanta and our WB DTV has been very stable and strong. Unfortunately, I only like "Smallville." I wish they would do movies in HD...

>> I'm in the Philly area and I'm pretty sure we don't >> have a WB HD channel.

As you note, it's not on Comcast in Philly, but WB OTA-HD on channel 54 (WPHL-DT 17-1) is fine (once I got my antenna pointed in the right direction).