I've been cable tv-free for about 6 weeks now. Here is what I miss:
-Penguins games: I've caught a few on NBC, but in general the play hasn't left me missing much. Been listening on the radio in the evening while I screw around on the PC
-cable news: not that I've actually missed it in the last month per se, but if a big news event was breaking I know I would. something like the Boston Bombing or Sandusky arrest/Paterno ouster would have me glued to the tv.
What I've done instead:
-caught up on previously recorded programs: I have about 500 programs on my DVR, most I've never watched - episodes of Nova, miniseries from History/Science/Smithsonian, other random junk like that
-made the most of Netflix: they've added a lot of educational documentaries recently, which is in my interest wheelhouse
-watched web-hosted tv shows: my favorite are Red Letter Media's Best of the Worst and Half in the Bag. Both are humorous movie review programs. I also like the weekly show Home Theater Geeks on Twit and Superhero Show on IGN.
In my living room to help find and play content:
-smart TV with Plex app, Netflix, Youtube, and Pandora
-Home Theater PC running Windows Media Center and Plex Media Server
-Xbox One
-Xbox 360
Using and sharing a Plex server is an amazing way to aggregate and consume content. My friends with Samsung smart tv sets have access to my entire library of movies, television programs, and DVR recordings by accessing my Plex server.
