 CAMEO(Brian Greene (V) (qv)): the films physics consultant  appears early in the movie as himself, being interviewed by  Dick Cavett (qv). There are two scenes; one with old footage of  Dick Cavett (qv) interviewing Brian Greene (V) (qv) in 1969,  then a scene with an interview in 1999 with contemporary footage of  Dick Cavett (qv) and an "aged" Brian Greene (V) (qv).