Americans don't have Christmas cake?!?!
You're right Sue, it is a type of heavy fruit cake with sultanas, raisins, currants, cherries, mixed peel etc., usually laced with alcohol (I'm doing brandy this year). Traditionally the cake is then covered with marzipan (ground almond paste) and then white icing (not frosting, but firm icing) over that. The top has some form of decoration - shops sell ready made cake ornaments like snowmen, Christmas trees, reindeer etc (some edible) or of course you can make your own.
QuiltE - I like your style!