While looking around in the owners lounge for Disco Bowling I ran across 4 slick backgrounds for the BlackBerry 8100, 8300, 8700, & 8800 series devices. The backgrounds may have been there awhile but they are news to me. I included a simple screenshot of them below. The blue one is my favorite and is the reason I posted this.
You can pick them up at this link below but you need to register for the owners lounge if you do not already have a login.