HOW TO find what movies two film personalities have in common

1) Use this special Search page on IMDb to find information about common cast/crew between two titles or two people who have worked together

See what movies A R Rahman & Mani Ratnam have worked on

(Source: How do I query IMDb for movies that two actors have in common?)

2) WolframAlpha can find movies two actors were in, if you try a query like this - movies with adam sandler and drew barrymore


Also see:
Does IMDb provide an API?