Television Crossover Universe

So it's tradition for the TVCU to have a Christmas post, and it's tradition for it to be posted late. In previous years, Gordon Long covered the Rankin-Bass Christmas specials, and then I have covered Santa Claus, It's a Wonderful Life, A Christmas Carol, the Grinch, and a Christmas Story.  (Am I missing some?  I guess we went two years where we didn't do Christmas posts....) So I wasn't sure if I was going to do one this year, but I apparently set a calendar reminder, and then I wasn't sure what to cover, but the past two years I've been using a list of the top 100 Christmas movies to watch Christmas movie marathons, and Die Hard was listed as the number 2 Christmas film on the list after It's a Wonderful Life, and I thought Die Hard would be fun to cover. So here's Die Hard.  More crossover connections than you'd expect. Using Movie Timelines, a youtube series I've fallen in love with, for some dates.  If you are a timeline junki...