50 First Dates is a film.
The first public screenings of films at which admission was charged were made in 1895 by the American Woodville Latham and his sons, using films produced by their Eidoloscope company, and by the  arguably better known  French brothers Auguste and Louis Lumire with ten of their own productions
 One might propose "going to the cinema" when referring to the activity, or sometimes "to the pictures" in British English, whereas the US expression is usually "going to the movies

