Interesting post on NYT's Lens blog: "Shawn Rocco, 37, is a professional photographer. He shoots a Motorola E815. Yes, that’s a cellphone."
http://lens.blogs.nytimes.com/2009/06/24/shoptalk-4/
Check out this Youtube video: Photographing Barack Obama with a mobile phone: http://www.youtube.com/watch?v=CWym8q13 ... r_embedded
And finally, Shawn's own blog: http://cellularobscura.blogspot.com/
Jarle