In what may be a sign that we're all getting old, Matt Damon, who became a bona fide star 13 years ago with the release of 'Good Will Hunting,' turns 40 today.

To celebrate one of the most successful (and, in many ways, underrated) careers in Hollywood, we're taking a look back at some of Matt Damon's best movies, from little-seen gems like 'The Informant!' to the uber-popular 'Bourne' trilogy.

Check them out after the jump, then share your favorite Matt Damon movies in the comments.
Ocean's 11
Based on 35 critics

A parolee (George Clooney) and his gang plan a big Las Vegas heist. Read More

The Bourne Supremacy
Based on 39 critics

Jason Bourne (Matt Damon) fights back when the CIA tries to kill him. Read More

The Bourne Ultimatum
Based on 38 critics

Jason Bourne (Matt Damon) continues to look for clues to unravel his true identity. Read More

The Departed
Based on 39 critics

An undercover cop gains a mobster's confidence, while a career criminal infiltrates the police. Read More

The Informant!
Based on 37 critics

Executive Mark Whitacre (Matt Damon) gathers data on Archer Daniels Midland for the FBI. Read More

Good Will Hunting
Based on 28 critics

A therapist (Robin Williams) counsels a janitor (Matt Damon) with a genius IQ. Read More

The Talented Mr. Ripley
Based on 35 critics

One young man (Matt Damon) begins to assume the identity of another (Jude Law). Read More

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