Well gee, this thread seems so lonely, and the world could always do with some good H/G venom, so I'll just get the ball rolling I suppose.
First of all, before I get to H/G stuff, I wanted to get to a supposed "comparison" b/t H/G and Arthur/Gueneviere that was offered as "evidence" that they "belong together". I find it amusing how one could say H/G (or any couple) are like Arthur/Gueneviere like it's a good thing, when really they are far from an ideal couple! Arthur only marries Guen in the first place b/c she has a large dowry (there's one contrast to H/G--in HP Harry's the one with all the money!), with not much choice in the matter for Guen, then there's the fact that they endure childlessness their whole marriage, when Arthur has slept with his half-sister and had a child by her (gee, considering that Hermione is ostensibly a "sister" to Harry, does that mean that Harry will have a relationship with her, to keep the A/G=H/G parallel going? ), which didn't go over well with barren Guen, and then there's the fact that from the very beginning Gueneviere loved Lancelot, and ends up finally having an illicit affair with him that tears the kingdom apart, with her bad marriage to Arthur ending at last as Lancelot saves her from the flames and runs off with her, where she's never seen again. So in short, with A/G we have a miserable, childless relationship ending in adultery and the wife leaving the husband with another man--boy, what a great relaitonship! Honestly, A/G was a terrible, extremely unlucky relationship, and if H/G are supposed to be like them, then it's a sign that they're not going to last or that their relationship will be awful (or childless), not that H/G belong to each other!

But
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as we know now from the Epilogue of Cheese in DH, they at least stay married for about 12-15 years (how old is James?), and have 3 kids, so clearly H/G isn't anything like A/G at all (except that both couples marry and have a woman named Gueneviere involved), and it's a silyl and inaccurate comparison to make!

Anyway, so in HBP we left off with the shallow, lust-and-hero-worship-only kind of relationship b/t Harry and Ginny, in which at most they "like" each other, and this "relationship" was hastily and sloppily developed and brought about in an entirely unconvincing matter using a handy chest monster (aka PURE LUST
not love!), and then they go out for about 3 weeks, out of which we see about 1 or 2 scenes only, and only one kiss. Then Harry breaks up with Ginny "for her own good" and Ginny nearly burns Harry with her fierce, "blazing" looks!

Fast forward to DH, and we
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STILL barely have any development of their relaitonship, though at one point it actually looks like Ginny is offering up
herself to Harry as a birthday present (maybe she saw Buffy and thought sex is what you're
supposed to give on your love interest's 17th birthday...), whcih in itself is rather disturbing and strange in an HP book. The H/G moments were of course nauseously cheesy throughout the book (though thank goodness she is barely in it!), culminating in his last thoughts before death being her lips on his--COME ON!

He's about to die and all he can think about is the lust of his life, Ginny? How about his best friends, Ron and Hermione, who have stuck with him the whole year (well Ron not quite the whole year), not to mention all the years before then, etc? It's just so silly and badly done, not to mention beyond cheesy--especially that he is thinking about snogging Ginny before he dies, not even just seeing her (like Snape, who just wants to see her eyes)--though even seeing her would be cheesy. In short, there was still not much in DH in that convinced me of H/G--yes, JK SAID that Harry wanted her and such, TOLD me so, but didn't really SHOW why or how it had happened. And I'm still not seeing how Ginny is at all like Lily, given the little more we now know and have seen about her....
The only saving grace was the JK didn't go all the cheesy way by having Harry's so-called "love" for Ginny be what gave him the strength to defeat Voldemort once and for all!

That would have been truly barf-worthy!
Anyway, what were other people's reactions to H/G in DH?
In any case, H/G remains by far the worst, cheesiest ship of the series!