I'm one of those who generally don't like HDR photos. Not because I don't like images that utilize HDR technique per se, but because so many images are pushed beyond "suspension of disbelief".
It's a question of thresholds for me. For example: http://www.cambridgeincolour.com/cambridge-gallery.htm
has some of the best HDR images I've ever seen. These do not, upon closer inspection, seem 100% real as light and shadow doesn't look like that to the naked eye - however, they are beautiful nonetheless.
However, it's just matter of taste - not because I think it's "wrong" from any philosophical sense of "purity".
Dubaiphil has some very tasteful shots from..where else...Dubai...where he utililized HDR.
If you haven't seen it already, check out OLONEO.COM for a very interesting new piece of HDR software. Also http://unifiedcolor.com/products-home
has a really good bid for HDR handling.
In your series, I particularly like the stadium-shot. In that shot you've tempered it to my person liking and the splotchy sky is not distracting.