Apparently, Jobs described something very similar to Siri back in 1984 when he was doing an interview with Newsweek. The interesting part is he talks about a "slate", I'd say he was talking about the iPad!
http://www.sirisource.com/2011/10/08/jobs/
Wonder what other ideas he had...
http://www.sirisource.com/2011/10/08/jobs/
Wonder what other ideas he had...