Conversation so far:
How did director Woody Allen make Zelig look like the newsreels of the 1920s?
Zelig was photographed and narrated in the style of 1920s black-and-white newsreels, which are interwoven with archival footage from the era and re-enactments of real historical events.
Did director Woody Allen actually use any old footage?
Zelig's old footage was interwoven with archival footage from the era and re-enactments of real historical events.
Who appears in the old footage of Zelig?
Zelig uses cameo appearances by real figures from academia and other fields for comic effect.

Question: Can you name some of the academic figures?
Self-contained rewrite: Can you name some of the academic figures the film uses cameo appearances for in Zelig?