I second Mark Pilgrim.
Also, I'd like to nominate Daniel Pitti
<http://iath.virginia.edu/~dvp4c> - formerly an authority control
librarian, now a co-director for University of Virginia's Institute
for Advanced Technology in the Humanities. He's been the chief
technical architect for EAD and EAC (Encoded Archival Context), a
companion data model thats much more machine-oriented and linked
data-friendly. He's also worked on some really great, innovative
digital humanities projects.
Mark A. Matienzo
Applications Developer, Digital Experience Group
The New York Public Library