It depends what they're looking for: Facts, insights or opinions and news on startups. Here's a list of items which i've always liked. To be honest you can get so much just from reading Hacker News.

Books:

  Founders at Work
  The Lean Startup
  The Four Hour Work Week
  Hackers & Painters
  Getting Real - 37 Signals/Jason Fried
  F'd Companies (Maybe not crucial but helped me think about startups needing to fulfill a need/fix a problem).

Articles:

  http://www.paulgraham.com/articles.html
  http://thestartupfoundry.com/
  http://avc.com
  http://www.bothsidesofthetable.com/
  http://steveblank.com/
  http://onstartups.com/

Market (Raw startup information/links):

  http://betali.st/
  http://angel.co

Interview Specific:

  http://foundation.bz
  http://mixergy.com
  http://thisweekin.com - TWI Startups or VC are both good shows.
  YC Startup School Videos (Not exactly interviews but great).

Startup News:

  http://thenextweb.com
  http://techcrunch.com
  http://readwriteweb.com
  http://venturebeat.com
  http://gigaom.com

Update: YC also has a library of information here too: http://ycombinator.com/lib.html