Whatever your passion happens to be, one should always strive to improve.
While there are (finally) some courses on facilitation and moderation of usability tests, I am always looking for colleagues to help fine tune and expand my knowledge of methodology and ways to improve my abilities to provide actionable feedback to the companies I consult with.
Here are some resources:
Although it is aimed towards designers, I think many of the paradigms in this article:
Characteristics of Good UX Designers are equally applicable to researchers.
I couldn’t live without the advice of Dana Chisnell & Jeffrey Rubin’s Handbook of Usability Testing
Jakob Nielsen has weighed in on What makes a good usability professional
There are also additional skills needed to do Global usability Research and a well recommended book is The Handbook of Global Usability Research