I love HDR photography! It's like, wow, you can capture every inch of nature awesomeness. The detail of clouds, building curves, color of grass & flowers under the sun and the beauty of light can be put together in a frame perfectly. 
HDR stands for High Dynamic Range. Based on Wikipedia, HDR photography is a set of methods used in imaging and photography, to allow a greater dynamic range between the lightest and darkest areas of an image than current standard digital imaging methods or photographic methods. Well, it is hard to be understood. Yeah. Basically, HDR photography is combining some pics taken in low, high and standard exposure value to obtain a final pic contained of the best part of those source pics. Still hard to be understood, huh? :p
I'm still not good at that, yeah I'm sure you've already know that, but here I have a HDR-edit pic. I only take a standard exposure pic, then I edit it and make other low and high exposure pics. I'm not satisfied with the final result, I think it still lack of something here and there. I took it from my Streamzoo account, so, sorry for the low-resolution picture. I forget where I stored the original one.
The Wall

By the way, here I found a series of articles which talks about HDR photography deeply. This online HDR photo maker is also awesome! Create yours! : )