I love the idea, but the implementation isn't to my liking.

(a) Images should be downloaded in the background so the transition from one to another is seamless.
(b) Should have an option to keep the image from rotating, and the image size should optionally be larger.
(c) Preferably, everything on the screen should be optional -- I may or may not want the description along with the image. In the best case, there'd at least be an option to have nothing on my screen but an image, sized to fill the screen.

Looking forward to further revisions, in the hopes this may improve aesthetically.