Thanks all for your comments. I like to hear different opinions and whys.
Techniques for those who are interested: the last four are all textured in ps elements 8 (not that it matters, many editing programs are capable of the same thing) with around 3 to 5 different texture layers, selectively erased with opacity adjustments. Then the whole thing is flattened and then selectively burned and dodged. That's it. You just kind of go with it. Can't get the same result twice if you try...
The first one is an HDR. The 2nd, 3rd, and 5th are HDRs with some textures applied as above. The 4th was taken through a window screen and then textured.