Title '2046' seen in Seconds (1966)
In the opening scene (after the introduction) of Seconds (1966), which is 4 minutes and 25 seconds into the film, a man walks by a train with large print across the front it -- a plaque with the numbers "2046."
Probably no connection, but then again, "2046" isn't exactly some number you see crop up everywhere. The chances of it being 2046 alone are infinitely small in a way (and if we're looking at just 4 digits, then there's a 1 in 10,000 chance for it to be 2046). But on TOP of that... the train in '2046' is headed to a place called 2046. This train is apparently number 2046, which seems incredibly high for a number on a train ;-P