Titanic
No matter how many times I watch this movie it will always be my favourite. It never ceases to draw me in despite the fact that I'm able to recite whole scenes line for line. The movie somehow balances a 'forbidden love' story for the first half and then a tense action sequence for the second half and it all manages to fit together perfectly.
Good as always - I cried a few tears. And I very rarely get emotional or feel any sort of connection to movies. This one just does it for me. Bravo James Cameron and everyone that worked on this masterpiece. Timeless.