Simple. What is your favourite boring movie(s)?
Off the top of my head I got 3 pretty quick:
-Assassination of Jesse James by the Coward Robert Ford
Very well told story leading up to the death of the famous outlaw. Brad Pitt, Casey Afleck, Jeremy Renner, Sam Rockwell
-Tree of Life
Terrance Malick has made another masterpiece that you likely won't understand why he is showing you what he is, even if you watch it multiple times. Brad Pitt (shit! I swear this is not a theme), Sean Penn, Jessica Chastain.
It's rare that someone has not seen this, maybe they couldn't hang in for the whole movie, but they know the story and know those icon words; "Huston, we have a problem". Tom Hanks, Bill Paxton, Kevin Bacon!, Ed Harris. Gary Sinise.