Cozumel has a 5-screen cinema called Cinepolis. It is located directly behind Chedraui on the second floor of the new mall. Cost ranges from 20 to 40 pesos ($2-$4 US) depending on the time and day that you go. Current releases are shown in English with Spanish subtitles. Wednesday is 1/2 price day.
Yes . . . they have popcorn!