These are taken from www.professionalphotographer.com and I recommend you check out the site... it's good!
I've recently taken an interest in photography and I'm using this list for inspiration. The top 3 were enough reason for me to bring out my old camera from my shelf and start shooting. I mostly take random, often bizarre, photos of either nature or self (if you want to see them, ask and I will give you the FB address)
They had ranked 100 and I added 2 of my own (no. 101 and 102)... enjoy!