it's the end of the world as we know it - and I feel fine*
I especially liked Roland Emmerich films because they always feature a diverse ensemble cast and includes little vignettes that underscore the human dimension of disasters. MoBob told me that Emmerich decided against destroying Mecca because he didn't want a lifelong fatwa on his head.
My favorite disaster movie though is still Deep Impact which I think is really underrated. I really like how the film tried to explore some of the social issues of an impending apocalypse. A close second is Independence Day which I watched over and over while I lived in Bamako. I wonder what that says about my state of mind then. Number three is The Core - a movie that does not end with a romantic relationship between two of the main characters!