well of course, there was the big one a few years back,
but also:
1953: "Titanic" - starring Barbara Stanwyk and Cliffton Webb - has a very similar plot to the 98 version, but not as big budget
1996: "Titanic" - Starring George c Scott and Catherine Zeta Jones = a "made for TV" film
There are LOADS of titanic documentries - with underwater view etc. - such as "Titanic:tradegy at sea"
How could we forget the British classic "A Night To Remember". Dir Roy Baker 1958 with Kenneth More and David McCallum. The most accurate telling prior to Camerons recent blockbuster, very 'British' being moody understated.