It was recommended to me and I picked up the blu ray and I have to say it is very good 'disaster' film.
That they filmed a lot of this on a ship at sea under obviously difficult conditions is impressive to me. The one negative I had about The Poseidon Adventure is they used a model ship during long shots of it at sea and it shows.
A great cast, too. Not usually a fan of Richard Harris but I like him here.
Overall, a terrific film, solid 8/10.