Fandango and IMDb offer up-to-date lists of movies that are currently playing in theaters. Both sites also provide lists of upcoming movie releases, as well as movie-related information like trailers, summaries and casts.
Current movies can be found on Fandango by hovering over Movies on the header. Fandango also displays movie times and sells tickets for upcoming shows.
On IMDb, a list of current movies is available from the In Theaters link on the Movies, TV & Showtimes page. In addition to movies, IMDb lists current television series and showtimes. The website also keeps track of movie popularity and box office trends.