For Christmas, we have ham (usually country ham); we typically have some turkey as well, but ham is the main meat.
Along with ham, the required dishes are:
scalloped oysters (same as AOIIsilver)
dressing (what people in more northern and western parts of the country may call "stuffing," but in the South, we don't "stuff" meat, we "dress" it

)
baked asparagus
For dessert, there are usually lots of different cookies, cakes, etc. (many of which are presents from neighbors), but the essential, centerpiece dessert is ambrosia -- everything else is to go with the ambrosia, not replace it.