Anyway. Let's ignore Sonic's mistreatment in the present and look back to Christmases of old, specifically the Christmas of 1999, when the millennium bug was striking fear into the hearts of common man and the Dreamcast was the coolest console money could buy (don't get it twisted: it still is).
During the dates of the 17th of December and the 28th of December, Dreamcast gamers had the ability to install one of the first instances of downloadable content (DLC) ever (at least the kind we've all grown accustomed to in the last two generations) to their trusty VMU.
The "Christmas Party" download brings festivity to your game of Sonic by placing Christmas trees outside the station and in the town center. When players make Sonic jump at them, festive messages will come up on screen, wishing them a Merry Christmas. The music will also change to the Acapella version of "Dreams, Dreams" from Christmas NiGHTS into Dreams. Hopefully no one back in '99 thought this was a sign that a NiGHTS sequel might be coming to the Dreamcast.