The best Christmas present was back in 1999 - I refused to spend any holiday with my family that year and Christmas day was with my friend Cindra's family. Among other things, her parents gave me a Diamond Rio MP3 player; it held ~a CD's worth of MP3s and ran on a AA battery and it was brilliant! But I assumed they'd mis-labeled the package and tried to give it back...
What's the best gift you've given?