Have you got 20 minutes, well better make that a few hours? Take a look at a relatively new site (www.rank.aphotoeditor.com) that features the work of many top professional photographers.
Anyone can sign up. You don't have to submit your own work, you can vote for the photographers who have submitted their portfolios or act as a photo editor and submit your own favourite professional photographers.
I've submitted a portfolio of my "most interesting" images on Flickr and I will be submitting my website once it's had a revamp, which it definitely needs again. Got to keep things fresh in this fast moving world.
So go on, check it out and have fun.