Count me as an idiot then. What little TV I watch, I watch over the air, and since "the magic of Digital TV" has the effect of drastically shrinking the coverage area to, uh, roughly the folks who can, and do, have cable, I suspect my life will shortly become TV-free. I get a watchable analog signal on about 20 channels, versus maybe 6 of the alleged 40 digital channels from the same group of towers.
And BTW: my brother-in-law has Comcast for TV and internet, and has to switch off the cable-modem (not just his computer) to get a digital TV signal (over that cable) that doesn't look like it's in the witness protection program.
So, in summary, digital is not immune to interference, it just hides it until it goes completely sideways. Such as, when your neighbour's "Wifi on Steroids" starts up a big torrent because "Heck, that TV station is 20 miles away, I couldn't be interfering with it."