Gave that up, but I have a couple of over-the-air tuners that also work on cable (identical freqs, different modulation), and their channel scans of the statutory unencrypted local channels were illuminating (I guess they can't turn off video completely because I still have Internet, but they let through only what they're obligated to carry by law...which is the same as what an antenna brings in. Bless Mt. Sutro.)

Some of the local broadcast stations are making good use of their ability to subdivide their spectrum. KQED has an empire of channels, doubled after they borged KTEH, and in addition to the main 1080 channel they have thematic low-rez channels like PBS:Kids. Well thought-out.

The pictorial equivalent of a kiloword is the channel guide on the tuner Web site, if you want to see the underlying HDTV frequency allocations. Otherwise, I'll spare you any more of it.