Holiday Spirit for HTC Sense 2.5
If you are running HTC Sense 2.5 either on your HD2 or another device an you’ve always wanted to customize it for the Holidays, now you can have the Christmas spirit right on your device screen.
There are two files available: the first one will install a theme with a nice Christmas tree wallpaper and transparent taskbars while the second one will replace HTC Sense icons with Christmas decorated ones. Love the twitter icon!
Word of caution: make sure you have a full backup handy just in case something goes wrong at uninstall, since it is overwriting system files.
(Source: XDA Developers)