imdb numbers

while i was writing this post, i noticed that brad pitt was imdb.com entry number 93. based on the numbers in the web address, i wanted to see who was number one, two, etc. i would assume these would be the order in which they were entered into the system. who's number one? Fred Astaire. followed by: Lauren Bacall, Brigitte Bardot, John Belushi, Ingmar Bergman, Ingrid Bergman, Humphrey Bogart, Marlon Brando, Richard Burton, and James Cagney.