Matt Damon glasses david letterman suit talk show hereafter

What on earth happened to hunky Matt Damon? I hope this is for another "serious actor" role or something! The 40-year-old dropped by Letterman in NYC to talk about his latest award-worthy project, Clint Eastwood's Hereafter.

But we're really wondering why his spy romance with Emily Blunt, The Adjustment Bureau, got pushed to March 2011. Maybe because it looked too similar to Inception? We're also excited to see Damon go Western in the True Grit remake this December. But what about the fact that he's not going to appear in The Bourne Legacy? What's a Bourne movie without Matt Damon?

So many questions!