One of my favourite photographers on Flickr has to be Boy_Wonder. His self portraits are so inspiring to me. "I am a part of all that I have seen." - Alfred Lord Tennyson by Boy_Wonder, on Flickr
Here's a girl called Amy Spanos from Flickr, definitely an inspiration, i would post my favourite picture of hers but sat scratching my head trying to decide, so here's her link http://www.flickr.com/photos/amyspanos365/
http://www.flickr.com/photos/iangav/4564158673/ Ian Gavan's exquisite captures in low light and the way he doesn't try to make them anything more than a low key, beautiful shot, impresses the heck out of me. He's a master of portraiture.