X-MasTree is a Christmas tree for your Mac. There are many options, including which color lights to display, lighting modes (static, blinking or fading), a few ornaments, and a badge displaying days left until Christmas. WARNING: setting the lighting mode to "fade" will beat the living snot out of your CPU.
What's new in X-MasTree
Fixed "Days left until Xmas" bug.
Added the ability to choose January 7th as the date to celebrate Christmas (as per some Orthodox traditions).