IMDb Names by the Numbers

Sorted by their respective "id number", the first people on the IMDb are

1. Fred Astaire
2. Lauren Bacall
3. Brigitte Bardot
4. John Belushi
5. Ingmar Bergman
6. Ingrid Bergman
7. Humhrey Bogart
8. Marlon Brando
9. Richard Burton
10. James Cagney

Others include Groucho Marx (#50, with his brothers somewhere in the 500,000s), Rowan Atkinson (#100), Lili Taylor (#666), porn star Tom Byron (#1,000) and IMDb founder Col Needham (#1,000,000).

Addendum: As of this moment (12.30 CET, 18 June 2006), the highest listed number is #2.287.127, which belongs to Luis Selgas.