IMdb lists over 800 films which use Shakespeare's dialogue, plots or themes.

Great movies often receive great reviews, so check the list of best-reviewed movies on review sites like Rotten Tomatoes and IMDB. Alternatively, Wikipedia has lists of highest-grossing films and films that received the "Best Picture" academy award, so any films on these lists should be well-respected.

See the related link below for Sidney Poitier's IMDb entry which lists all of his movie appearences.

William Shakespeare did not write screenplays, because films did not get invented until about 260 years after his death and films with sound did not get invented until 311 years after his death. The answer is, Shakespeare did not write any films or even filmscripts.

He did, however write a number of stageplays which have been adapted for the screen numerous times, both before and after "talkie" pictures. The Internet Movie database lists more than 800 films adapted from his plays, the earliest in 1899 and the most recent only now in development. The Guinness Book of World Records lists Shakespeare as the person who has had more films adapted from his works than any other, and the competition is not even close.

Citizen Kane and Casablanca were two 1941 films that frequently appear in "best of" lists.