Some of you who know me may already know that I prefer to only use my own photos that I've taken with the phone for use on my lockscreen and start screen.
However, I don't do the normal, "Look, I took my own picture!" type of thing. Most people think I've got a background I downloaded somewhere, and when I tell them, "No, I took that with my phone" they seem surprised.
Here's my lockscreen currently, which I took the picture outside this afternoon with my 640. A few rocks/gravel in a puddle on a dirt road where I live. I drive over this several times per day, and today I got out and snapped a few pics of different things to see if I could bring the "ordinary and mundane" up a notch. I thought it turned out rather nice.
I never realized the colors in the rocks contrasted so nicely until I got up close to look.