Here's an useful link for those who’d like to see what they're paying for before they waste their Microsoft Points: www.dashboardthemes.com. The guys on the site buy and capture shots of the available dashboard themes for our convenience.
I try to avoid the themes as they are an easy way to spend cash. I did buy the Penny Arcade theme which is very nice except the blank ink outlines of the characters gets in the way of actually viewing the content of the dashboard. I also got the super-exclusive 'I played on Emergence Day' Gears of War theme by – believe it or not – buying and playing Gears of War on Emergence Day. Annoyingly enough 30 seconds into playing the game I got the three red lights of doom! Luckily enough I managed to get the box working for long enough to download the theme and gamerpic which to be honest, are not that great anyway!
Hehe will give this a try!