Tom Hanks Ya Gotta Hear the Story He Told at Michael Clarke Duncan's Funeral

9/11/2012 12:45 PM PDT

You Gotta Hear the Story Tom Hanks Told at Michael Clarke Duncan's Funeral

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Tom Hanks
gave a GREAT speech at Michael Clarke Duncan's funeral ... retelling a story M.C.D. had told him about why the enormous actor joined (and then unjoined) a Chicago street gang when he was a kid.

Hanks -- who co-starred with Duncan in "The Green Mile" -- had the crowd roaring with laughter ... a touching tribute to his old friend.

As we previously reported, the private ceremony took place at Forest Lawn in Hollywood -- with tons of Duncan's famous friends in attendance ... including Jay Leno, Vivica A. Fox and Holly Robinson Peete.