[willlll]

Tom Lane is a hero. Guy worked on TIFF, did a ton of PNG, then organized JPEG, and now does seriously awesome work on postgres, and has for some time.

He also responds to a ton of postgres mailing list emails http://www.citusdata.com/blog/57-postgresql-full-text-search

[surrealize]

Seriously! Most of what I know about relational databases, I learned by reading Tom Lane's emails to pgsql-hackers and -performance.