This is the thread I have been waiting for as I suspect most of mine will be disagreed with but...
Last Christmas - a recent discovery by me but I loved it
Gremlins - a much maligned movie but full of fun
Die hard - certainly the first 2 at least
Trading places - very dodgy jokes and politically incorrect throughout but I maintain still loads of fun!
LA confidential - just stunning!
The long kiss goodnight - cannot stream it anywhere! If anyone can help with this I'll love you forever!
Batman returns - Michelle Pfeiffer in a catsuit and Danny devito's deliciously squirmy penguin - what's not to love?!
A bad moms Christmas - another quite new one but great fun
On the more conventional side of things though possibly not exactly "traditional"...
The family stone - if you're not crying at the finale you're not human!
Four Christmases - anyone with a remotely dysfunctional family can totally relate
Deck the halls - just daft fun
Scrooged
More traditional but still not totally schmaltzy crap...
Muppets Christmas carol
The Santa clause
Miracle on 34th street - ok a bit schmaltzy
while you were sleeping
The preachers wife
Love actually - I know it gets slated on here but I still like it with all its faults
The sound of music - a family tradition really
Little women (1994) I like this version it's fairly faithful to the book and I like Susan Sarandon in it although I must admit I haven't seen the most recent adaptation yet so can't comment on that
On my list to possibly try (would love to know thoughts on these and if posters could say what they're like other than just 'good' or not as the case may be 
)
Christmas chronicles
The best man holiday
Jingle jangle
Happy Christmas (2014) and Noelle (2019) - both star Anna Kendrick who I love
Kiss kiss bang bang
National lampoons Christmas vacation - I've never seen ANY national lampoon anything a friend is trying to persuade me
Absolutely cannot STAND it's a wonderful life, bloody awful film! And I like old movies!
If you must watch an oldie make it a good one like holiday inn or the shop around the corner though there tends to be plenty of these on tv over the Xmas period anyway. For a really quality old movie not a Christmas one though Casablanca is on at some point (spotted in my radio times can't remember details sorry)