The Poseidon Adventure

Over all I think this is an amazing film. The direction, the acting and of course the effects. 
Most of the stunts were performed by the actors themselves, and the film was shot in sequence so the injuries and the clothing would fit continuity.
There are some melodramatic moments to be sure, and they could have found some way to lose the little kid, but it is a fantastic ride. It only slows down long enough for the audience to catch its breath and then picks back up at twice the pace.