I am not the kind of person who is big into themes. Personally, I just prefer the default zen theme, and just change the wallpaper to my liking. There are several sites that I watch for BlackBerry news. Often they feature a new theme. Usually I don't pay much attention to them but boy did this one catch my attention.
It's the Swine Flu theme by Calx based on the Calx Real Icons set. It features 3D metering on the home screen for battery and signal strengths, as well as a customizable hidden 3D icon dock on the home screen. The icons have been modified to give it a manga (anime) feel, which I totally like. Now if only I have a phone that was compatible with it.
Calx Swine is available for the BlackBerry Bold, Curve, and Tour for $4.99.