I've had the HD service for just under a month now, and I have no complaints thus far with Time Warner(and you can't say that very often).
I do however have issues with the lack of available channels and the fact that every station other than Showtime broadcasts 2.35:1 films in 1.78:1 mode so it fills the TV screen.
But I guess at only 5 bucks a month, I can't really complain about it. Hopefully they'll add a few more channels over the next year.
What I mean is that they crop off part of the picture so the frame fills the entire screen. It's essentially Pan & Scam, although not to the degree it is on 4:3 TV sets.
A couple weeks ago, CBS and ABC aired Tomorrow Never Dies and Armagodawful respectively and both were shown in 1.78:1 despite having an OAR of 2.35:1.
I'm not insisting these stations do this every single time a 2.35:1 movie is aired, but it does happen at an alarmingly high rate. And it's odd that they'd do something like this to appease J6P when you consider that the folks shelling out for HDTV's and HD tuners are likely to be OAR enthusiasts.