Amanda Pendolino at 2015-12-13 19:02:02:
I met most of my contacts through my internships, jobs, and the people I met at those companies.
You may want to check out my blog posts on networking: http://aspiringtvwriter.blogspot.com/search/label/Networking
I would also look into panels and events by the following organizations:
JHRTS
The Writers Guild Foundation
Paley
CAPE
These are more film-focused, but also:
American Cinematheque
Cinefamily
The Black List
You can also meet people by volunteering at the AFI Film Festival (or other festivals).
You could also start a writers group (or perhaps a TV watching group?) with people on Twitter or Craigslist. A lot of people are tweeting about their favorite shows these days.