If you're reading this, chances are you'll be able to relate to Walter Mitty.
If you bother to read movie reviews, that means you really like movies, which means you're very likely an escapist like him. Or like me.
Welcome to the club.
What we have here is a story about the power of imagination to make real life bearable and, beyond that, its power to make real life bitchin'.
Mitty spends the first half of the movie indulging in imaginary adventures to escape his grey world.
In the second half, he goes on an actual adventure, spurred by his desire to have his real life more closely resemble the awesomeness inside his head.
My favourite scene is the one in which he's too afraid to get on a helicopter with a drunk pilot, but then he imagines his crush (Wiig) serenading him with David Bowie's Space Oddity.
His courage bolstered, he jumps on the chopper.
He almost ends up dead, but that's not the point.
The point is that Space Oddity is an amazing song, and the secondary point is you live only once.
One thing I've always liked about Stiller is his sensitivity.