I'm trying out LED Christmas tree light strands this year. They are finally becoming somewhat affordable, and I have to say, I'm really impressed. They are cool to the touch, the colors are more vibrant, and they promise many, many times the number of hours one gets with regular Christmas tree lights (which doesn't surprise me, given how long LED lights last in general).
I think this year and next should be the years of LED; this is just one more stake in the heart of the incandescent light bulb.
Anyone else trying out these nifty lights?