At the Millions there's a link to an interview with Salman Rushdie about the 2008 Best American Short Stories collection. At around 7:30 into the interview, Rushdie mentions some regret at not including a David Foster Wallace story, in light of DFW's death. Presumably he's talking about "Good People," DFW's short, electrifying last piece ever in the New Yorker.
Twenty stories were reprinted in the collection. Rushdie says the DFW story was number 21.