Unfortunately there isn't a global consensus on this as individual language groups have their own 'most popular' stories. What is popular in French maybe completely unknown in Chinese. And popularity is time dependent. What may have been very popular once maybe almost unknown today.
If durability of fame is any indication of popularity then in English I would say the top contenders would be:
In french:
In German:
Horror
the shining
Horror is most popular
Most popular: Horror Highest Grossing: adults
the grudge 2 you will be like it >>>>>>>.............
Horror, Drama and Romance.
According to the website movieweb, some of the most popular horror movies in 2007 are I Am Legend, Halloween, Saw IV, Grindhouse, and Hostel: Part II.
the 1970's
how the camel got his hump is the most popular story
the exorcist
The most notorious Texas based horror movie would probably be "The Texas Chainsaw Massacre". However, there are other popular horror movies that took place in Texas, such as "The Devil's Rejects" and "House of 1000 Corpses".
Avatar is the most popular film in the world