Links to help you with events:

Extemp

Extemp Central
Introduction to Extemp
Economist
Christian Science Monitor

Broadcasting

Voice of America - name pronunciation guide
Kentucky Herald-Leader
Cincinnati Enquirer
CNN

Debate

Planet Debate
Current Debate Topics
Debate Central
Debatepedia

Interpretation Events

Dramatists Play Service
Samuel French
Mushroom Cloud Press

Totally awesome speech links in general:

Kentucky High School Speech League
Kentucky Educational Speech and Drama Association
National Forensic League
ForensicsOnline - forums all about speech and debate
SpeechGeek