Well, almost all found on flickr! I've loved the idea of using men's shirts (or shirting fabric) for quilts ever since I saw Kaffe Fassett's Shirt Stripe quilt (above top left) from his book Passionate Patchwork. I found a few lovely examples on Flickr.
Above, clockwise from top left:
:: Shirt Stripes Quilt by Kaffe Fassett, from his book Passionate Patchwork
:: Colonel/Kernel Panic Quilt by Film and Thread
:: tunnel vision by Lori-B
:: DSCN1802 by drobertatClemson
Two beautiful photographs of a beautiful quilt: Shirting quilt by piece and press