Maybe I'm too old to consciously measure shows that way, anymore.

(grin)
I can definitely see Bones as a "hot" show. There, you have rather attractive people (and for me, the attractiveness of the women matters most) who often find themselves in flirtatious situations with each other. I suppose Smallville and Lost might have some of that, too, but there are current shows that I would put higher up on the scale than any of those that you've listed.
True Blood is perhaps the "hottest" show on television right now, with other premium series (The Tudors, The L Word, Weeds) also very highly rated. I think the Michael/Fiona relationship on Burn Notice is high on the list, as are those sparks flying between Richard and Kahlan on Legend of the Seeker, and between Chuck and Sarah on Chuck. And I cannot help but put Mer-Der from Grey's Anatomy on the list, despite how many anti-Mer-Der folks there are.
I think there are also a lot of situations that producers try to put forward as "hot" that fail, sometimes miserably, in my book:
- Grey's Anatomy is, of course, supposed to be all about the "hot-ness", but other than Mer-Der, I think they all fail, to some extent. I have to qualify this, though: They don't really fail in the way other relationships on this list fail: Those are incidental aspects of those shows, so the criteria for failure isn't as stringent. With Grey's Anatomy basically being all about the "hot-ness", even something that falls slightly off the mark "fails" IMHO.
- Private Practice is also, of course, supposed to be all about the "hot-ness" but those relationships fail to achieve their objective under any set of criteria, in my opinion. Nothing "hot" there at all.
- House and Cutty, on House. And I think the producers have acknowledged that, and won't try to continue that plotline. I also think the Cameron and House, and the Cameron and Chase romances are not "hot" (despite the latter having had been a reflection of off-screen reality for a while). The only relationship on that show I consider "hot" is Foreman and 13.
- Sheriff Carter and whoever, on Eureka. I just think that he's got anti-chemistry with women, and I think that
adds to the show. His relationships aren't really put forward as "hot", I hope, but rather are put forward as funny, due to how the "hot-ness" fails to materialize.
- Tony and Ziva, on NCIS. Not "hot", at least not yet.
- On In Plain Sight, none of the relationships presented have been "hot" at all, AFAIC, but, paradoxically, Mary, all by herself, is "hot".