the last time i moved, Comcast cemented themselves in my mind as giving me the best customer experience i've ever had with a cable company.
they scheduled the appointment for a Sunday, which i thought was not only strange, but also kind of figured i would be stuck at my house for an entire day on the weekend, waiting for them to show up.
so...the guy not only shows up, he showed up 45 minutes early. i was sitting out front smoking a cigarette. "morning, man! how goes it?" i say.
"great, bro! mind if i smoke a cig with ya?" the cable guy says.
"not at all, man!"
so we sat there, smoked a couple of cigs, and shot the shit for twenty minutes or so. then, he got to work getting things hooked up at the source, which is a fairly precarious ordeal, as there is a drop off of about twenty feet at the front of my yard. once at the top of the ladder, make that close to forty.

i went out and held the bottom of the ladder with my foot, just to be on the safe side.
he then came in and ran new lines for me. (he was supposed to charge extra for that, but didn't.) after making sure everything was in working order, we shot the shit a bit longer, watched a bit of Formula 1 racing, had a coffee, and off he went.
awesome service. he gave me his card, and said that if anything went screwy, call Comcast and request him personally, and he'd make sure everything got fixed.
definitely earned my continued business.