I have been a fan of Martin Bailey for quite some time now.  I first learned of Martin through his involvement as a co-host on TWiP, and that led me to seek out his own podcast.  His images are what really fascinates though.  I would think that his signature work is Snow Monkeys, and the image below is a great example of that:

Be sure to go check out the rest of Martin's fantastic work.  You can find out more about him on his website, Martin Bailey Photography, on Google+, Facebook, or Twitter.