Joshua Glenn over at The Boston Globe/Brainiac has been working on a smart series on American generational categories. In the inaugural post, he takes on the question of whether Barack Obama (born in 1961) is part of the baby boom generation or the post-baby-boom generation. Arguing that the traditional twenty-year generational divisions aren't sufficiently flexible, he proposes the following categories:

1914-23: Greatest Generation
1924-33: Postmodernist Generation
1934-43: Anti-Anti-Utopian Generation
1944-53: Boomers
1954-63: OGX (Original Generation X)
1964-73: PC Generation
1974-83: Net Generation
1984-93: Millennials
1994-03: Too soon to say