TV highlights: Classic Christmas films and specials take over prime time

All times Eastern.With Christmas mere hours away, what better way to welcome it into your home than with the classic and rightly bawdy "National Lampoon's Christmas Vacation" (ABC Family at 7 p.m.). For National Lampoon newbies, this one has the Griswolds hosting their dysfunctional relatives for the holiday and Clark going mad over his blinding light display.