The two starred as Shelly Levene (Pacino) and Richard Roma (Cannavale) in the 2012 Broadway revival of David Mamet's Glengarry Glen Ross.
Although Cannavale is on a stage hiatus, his son Jake made his Broadway debut in Larry David's Fish in the Dark. Get to know the 19-year-old newcomer!
Watch Cannavale's interview with Letterman below:
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