IMDB stands for internet movie data base.  I am forever looking up movies and actors(actresses).  When was it made, who was in it.  You can search for a person and see what else they were in. You can even do a search for a movie using key words if you don't know anything else about the movie. 

Being an old movie buff, it can be really hard trying to find out about old movies, but I haven't had too much of a problem using key word.