After being conditioned to UCD in grad school, Agile or Extreme Programming can be quite unnerving when you initially start out in a company that practices this methodology.

Here are some resources out there to start an initial phase of “getting used to”

Adapting Usability Investigations for Agile User-Centered Design
by Desiree Sy
Source Journal of Usability Studies, Volume 2, Issue 3, May 2007, pp. 112-132
[Do download the pdf of the Article Adapting Usability Investigations for Agile User-Centered Design ]

Clash of the Titans: Agile and UCD
By Richard F. Cecil
Source UX matters, Published: December 18, 2006

How to incorporate user-centered design into agile development methodology
Activator: Pawan Vora
Source Usability Professionals’ Association (UPA 2004 Idea Markets)

I found a lot of resources in slideshare and added them to my favorites with the tag “agile”.