Genre: A disaster film is a film genre that has an impending or ongoing disaster (such as a damaged airliner, fire, shipwreck, or an asteroid collision) as its subject. (Wikipedia)
Like: I like these type of films because the question of what would mankind do if this happened to the world. A film like this can really show the primordial nature of humanity.
Dislike: Being a sub-genre of action disaster film suffer form the same weakness of to much syndrome.
Wikipedia: Films Considered the Greatest Ever
Day After Tomorrow, The
Sum of All Fears , The
War of the Worlds
The Future of Disaster: