Thanks for the complement logwed 
Murray's, I think your descriptive of post progressive is spot on. Prog rock has become a cover for so many genres, particularly cross over, genre bending music. Experimental would be another good term. Talking of which a classic example of cross over, genre bending, experimental bands would be London based Chrome Hoof.

I am very glad The Pineapple Thief have been mentioned as they are in my top 5 all time best bands and I went to see them live a couple of weeks ago. I would group them as a less experimental Radiohead where their sound is closer to the first three Radiohead albums. They describe their music as 'bittersweet progressive'. They are on tour at the moment and I would so recommend you go and see them.
http://www.pineapplethief.com/gigs
The Nordic bands such as Anekdoten, Anglagard and The Flower Kings are all ready appreciated here
http://www.head-fi.org/forum/thread/462606/the-nordic-prog-rock-appreciation-thread
as I think that Nordic scene is big and influencial enough to deserve its own section. The Swedish bands in particular kept traditional prog going as it died a death, especially in the UK.