I have watched both these movies in the last two weeks and find them to be very good, I ignored the stupid comments that people gave on the two films on IMDB. those people have no taste for movies at all, they just like to put it down in a hole and burry it alive.
The first movie was a amazing film, a hidden fault line causing a series of Earhquakes to the big 10.5. Settle hit by the first, the Sky tower falling, then towns falling in, San fanstico (bad spelling) next to go and then the biggy, you've got to see it to see the massive destruction and the cool story line to it. As for it follow up, wow what a big theory, rapid resveal plate movement, the plates starting to pull back on themselves causing choas through out the West to mid USA.
Not only the damages it causes is amazing but it how mother nature can strike with little of not much of a warning causing massive damage in it whack.
It to my point of view a must watch film if you interested in natural forces that cause damage on a massive scale.

I like it alot even both are over 2 hours long in total of 4 to 5 hours put together

-Threehorn