Another place you can watch Bertrand Russell is in Aman (1967), to my knowledge the unique appearance of a mathematician in a Bollywood film. The relevant part is here:
http://www.youtube.com/watch?v=VGqLXOFFlqo ,
in which Russell talks with a medical student who is proposing to do research on atom bomb survivors in Japan.
For anyone curious, the
(The Hindi voiceover during the interview is a translation of just repeats what they're saying or just said in English. In the 30 seconds before Russell appears, the dialogue roughly translates as "A letter from Bertrand Russell! Gee whiz!"

