I also watched the bonus features on the Blu-ray. Everything from the DVD was ported over, only in high definition (1080i) except the music video which was 480i.
There were a couple of bonus features on the Blu-ray that weren't on the SD-DVD. One was a virtual tour of the menu screen. The high definition animation turned 360 degrees and was quite beautifully and intricately animated.
Another was a virtual family room which you could decorate with dozens of ornaments, trim, etc.- tree, stockings, wreath. Could be fun for little ones to play with.