I'm not sure who this may interest, but all this month VPForums.org (the Visual Pinball forums and repository) is holding chat sessions with some of the top designers and programmers in arcade/pinball history.

Today is Larry DeMar and Greg Freres.
Lonnie Mihin and George Gomez are up on Saturday the 17th.
Steve Ritchie and Roger Sharpe are later this month.