[itvt] - Interactive TV events are always noted in the [itvt] industry leading email newsletter.

informitv - Interactive TV - Events - Regularly updated related events. informitv is maintained by iTV specialist Dr William Cooper.

Advanced-Television - Events Diary

CEATEC

CASBAA - The Cable & Satellite Broadcasting Association of Asia
 
Digital Media Wire - Regular briefings on the convergence of entertainment, technology and the Internet.

Ensequence - Interactive TV Events

Future TV Advertising Forum

Interactive Television Alliance - Always check ITA's webpage for Interactive Television events.

iptv forum

Mipcom Conferences

ThinkDigitalTV's list of Events