So it this a DirecTV thread for the HD channels currently carried on DirecTV? Where is National Geographic HD (no stretch), Lifetime Movie Network HD (stretches all SD). These two are going to be up on D* at some point. The fact that Lifetime Movie Net HD is stretched strongly indicates that Lifetime will be a stretched channel whenever the HD version goes live.
I don't recall seeing any stretching on HGTV, except for commercials, because I thought it was all HD channel. If they stretch only the commercials, does that count? If so, Showtime HD stretches the upconverted promos for their shows & movies. If the channel is going to be listed for only stretching the promos and/or commercials, then that should be noted in the list.