If I have a chance today I'll go next door and see what WYTV looks like on cable. WYTV is near impossible to receive here, but I have always been able to receive WFMJ and WKBN.
Agtiny, KDKA has been just fine OTA.
Agent, WPXI was fine down here last night, ER was in HD. I have noticed that thunderstorms and heavy rain affects DTV reception. When it rains or storms I've noticed picture freezes, break-ups, and switching from full screen to windowed. There is no real change in signal level either. It's just weird.