Leonardo DiCaprio [1] celebrates his 40th birthday this week, which got us thinking about how many years he's been on the Hollywood scene. We still remember when Growing Pains welcomed DiCaprio into the family as Luke — because he stole our hearts pretty much immediately. It only got better from there, as DiCaprio charmed us in movies like Romeo + Juliet, Catch Me If You Can, and, of course, Titanic [2], all the way to The Great Gatsby. Take a look at some of his most memorable roles.

Parenthood (1990)

Growing Pains (1991)

This Boy's Life (1993)

What's Eating Gilbert Grape (1993)

The Quick and the Dead (1995)

Total Eclipse (1995)

The Basketball Diaries (1995)

Romeo + Juliet (1996)

Marvin's Room (1996)

Titanic (1996)

Celebrity (1998)

The Man in the Iron Mask (1998)

The Beach (2000)

Gangs of New York (2002)

Catch Me If You Can (2002)

The Aviator (2004)

The Departed (2006)

Blood Diamond (2006)

Revolutionary Road (2008)

Body of Lies (2008)

Shutter Island (2010)

Inception (2010)

J. Edgar (2011)

Django Unchained (2012)

The Great Gatsby (2013)

The Wolf of Wall Street (2013)