Matt Damon -- I'm Not Dead

9/11/2009 2:35 AM PDT BY TMZ STAFF
If Matt Damon died in the treacherous mountains of Palos Verdes, it's certainly news to him.

Damon was on Letterman last night, where when asked about a ridiculous fake article that announced his death -- which INCORRECTLY cited TMZ as a source -- Matt replied, "I haven't heard, but I feel pretty good."