Greenblatt is known for generating insanely good returns (34% annualized) in his original Gotham Capital vehicle from 1985 to 1995.
He took advantage of spin-offs, post-bankruptcy equities, and other plays. He wrote about his strategy in a really good book that has a cheesy title:
But nowadays he's focused on some other strategies, and he dives into that in the interview.
Embedded below is the video of Wealthtrack's interview with Joel Greenblatt: