Here's a very interesting piece we had in for framing last week. A photo by artist John Stezaker. The image is heading off for an exhibition and the framing needed to match the existing pieces that had already been framed, lucky we managed to find the same frame, so it was just a case of making an inner spacer to keep the glass away from the photo as there's no mount. This is a lovely way to frame photos, especially something as conceptual as this.
You can find about more about Stezaker's work here http://en.wikipedia.org/wiki/John_Stezaker