Well, I suspect I'd like Dr Who & Torchwood (& Sex in the City & a few others).  But I have way too much to watch now.  On too many EHDs.  Heck, I just came across an unused, unopened 1.5TB EHD that for the life of me I don't remember buying!
I'd still rather see more WW I & WW II stuff.  Everything on now is reruns I've already seen.  Although I did miss a couple of WW II in HD, so I'm looking forward to reruns of that.
Yet I'd still rather see it all in HD, so bring on more HD channels!