Take a look here. It's a website containing only the best works of the best photographers/artists there are. Each picture is screened before it's placed on the site. It's a very elite group, and as a result of it the quality is unbelievable. Although the genre of images on the website is a bit specific, each and every one of the photo's is amazing. For example, take a look at this one. Really cool stuff. I still have a long way to go before I can match that...