Podcasts
UXpod
Interviews and content about user experience design that apply to design in general.
Manager Tools
I can't say enough good things about this podcast. Whether you're managing or being managed it'll help you become a better professional.
The Tim Ferriss Show
Interviews with people who are the best at what they do.
Books
Imagine: How Creativity Works
Jonah Lehrer
Predictably Irrational: The Hidden Forces That Shape Our Decisions
Dan Ariely
TOOLS
Agile Methodology
The go-to methodology for software development that's influencing development across industries. Even if you don't practice it you should be familiar with the concepts.
Pivotal Tracker
An online team-based service for tracking feature development.
Trello
Another online team-based service for tracking feature development. One of my favorites for ease of use and functionality.
WEBSITES
99U
A bajillion articles on creativity and professional development. Make some nachos and spend an afternoon exploring what they have to offer. Or, better yet, read one article a day.