Comcast has lit a fire under itself of late, breaking out new HD channels in a variety of locales around the country. The latest to find a few surprises in their EPG is Nashville, Tennessee. If we just rang your bell, you can excitedly fire up your set-top-box and find Disney HD, CNN HD, AMC HD, Science HD and TLC HD. Curiously enough, the Comcast additions seem to all be rolling out around the same time, though the actual channels received is varying widely by region. Nevertheless, take a glance at your own lineup just in case any lurkers have evaded you.