Before he turns himself into J. Edgar Hoover for helmer Clint Eastwood early next year, Leonardo DiCaprio will pause this weekend to reflect on his collaborations with Martin Scorsese — and get in a little awards-season tubthumping for “Shutter Island” at the same time.

The American Cinematheque will screen the four pics the pair have made together at the Egyptian Theater, starting Saturday with “The Departed” (2006) and “Gangs of New York” (2001) and continuing Sunday with this year’s “Shutter Island” and “The Aviator” (2004).

DiCaprio will be on hand Sunday at 1 p.m. for a conversation with Scorsese. The helmer is set to beam in via satellite from London, where he’s working on his first 3D feature, “Hugo Cabret.”