Some useful posts I made:
Script to update your PPM Repositories
Survey of Surveys on HTML Templating systems
Should I use Fields, InsideOuts, or Properties?
What is the fastest way to download a bunch of web pages?
Params::Validate or Attribute::Params::Validate?
Other useful posts:
A Growing Dislike for SQL-OOP Mappers
-- Catalyst superstar chris discusses some of the disadvantages of db->object mappers. note: I am very enthusiastic about the Catalyst project myself, and the fact that its developers are realistic about its shortcomings makes me if anything even more willing to drink the kool-aid :)
Browseruk seems to know a lot about threads.
Dragonchild wrote some useful things about Attributes.
Holli is good at regex, and internationalization.
gmax is the db king (recently hired by mysql :) )
jdtoronto hobnobs with VCs. (J2EE vs non-J2EE Java vs Perl from a venture capital perspective: Re: Perl Programmer -> J2EE Convert?.)