I think most people search for a movie because they want to find out if it's worth watching. That's what I usually do, anyway.
So, the information in the zero-click box should be the information that is most prominent on the movie's IMDb page itself: the movie's score (#/10) based on the votes of # users, the movie's genre, synopsis and year.
So, in the case of Lost in Translation, the 0-click box would contain something like:
Lost in Translation (2003), drama, romance, score of 7.9/10 based on 136,635 votes. A movie star with a sense of emptiness, and a neglected newlywed meet up as strangers in Tokyo, Japan and form an unlikely bond.
Those would be the neccessities. If there's room, you could fit in the names of the director and the main actors (although, I don't think it's that easy to tell who the "main" actors are).
IMDb also displays Metacritic's score. That would also be a nice think to see. As would rottentomatoes' score (based on critic opinion).