-ask him how much his work on Fallout 2 when he was a noob influenced his dialogue heavy Planescape: Torment.
-what did he think of Bethesda's casual noob Fallout 3. Did he lawl?
-what did he/does he think of Troika's Arcanum: Of Steamworks and Magick Obscura. Does he wish he worked on it?
-who else should get lots of credit for Planescape's design as he's normally the only one mentioned by fans when that game comes up in conversation.
-what is with his infatuation with old hags like Ravel (Ravel is probably his most interesting char - I'm sure he'd agree). Is his interest in old women seers personal or acquired from reading novels?
-the women in HoW and Icewind Dale 2 who are like or who maybe _were_ Ravel. Was that Avellone or Sawyer's work?
-what books did he read that enabled him to express intricacies of death so well (PST's mortuary, MOTB's Myrkul furnace etc.)
-ask him if some inspiration for Akachi's avatar battle (The Faceless Man) was got from Ocarina's Dark Link.
-does Obsidian own any IP from Planescape/Icewind Dale 2? If so, what?
-does he miss the days of Interplay/Black Isle/Troika? Surely these were the greatest three rpg devs of all time?
-why does Obsidian always wear the cast off clothes of a long-gone guest?