Articles:
Philly Inquirer - Interview with Aaron Sorkin about Ainsley.
Article in the Raleigh Observer - [ Archived at The West Wing Online ]
A review of In This White House (because it's a good review, and he loves Ainsley).
A rant about Ainsley (quite entertaining).
More ranting (less entertaining, and also less about Ainsley).
Planet Hollywood article
Sorkin's treatment of women gets more annoying - [ Archived at Inside the Bartlet White House ]
TV Guide short article
Rose Garden Strategy (in three parts)
Emily Procter as worst actress (eh?!)

West Wing sites:
Inside the Bartlet White House
The West Wing Continuity Guide
The West Wing Online
An Unofficial Tribute (not updated for a while)
This Week on The Left Wing (you kinda haveta include this one!)
Wings of Desire (a British site!)
LeoMcGarry.net
JohnSpencer.net
The Unofficial Richard Schiff Home Page
Allison Janny Unplugged
Martin Sheen - Journeyman Actor