I mostly play on my Xbox, since I always liked the console, I basically just use mine for youtube, BBC Iplayer, Youtube, Internet and TV really.
I do pretty much everything on my PS3: I play games (between physical discs, digital purchases and PlayStation Plus I have over 150 games), watch DVDs/Blu-rays, Netflix, Vudu, I keep an extensive collection of music files and video files. It's more-or-less my all-in-one entertainment center, and my preferred gaming machine (trophy level 17, and ever climbing). Can't wait to pick up a PS4.
Uh playing GTA online, playstation home, netflix, Blu ray, some other games. But saving it for Persona 5 especially
When I use it (which these days is rarely... been at least 5 weeks since my last proper sesh!) I use it for most of my single-player games and blu-rays. Sometimes I might go online, but I use xbox more for online since I have a battlefield/halo buddy on xbox. Not so much for PS3.
ps3 is an awesome console, if you haven't already check out games like the uncharted series or the last of us
I Play games, watch movies and tv, or go on PS home. I also bring it to school to use for my gamers club.
Game, watch movies, Netflix. I even used it to go into EC chat a couple of times in the past. I also used to websurf on it when I was too lazy to get up out of bed to get to my desktop (back before I had a laptop).
I just play offline, mainly GTA IV, Burnout Paradise & Just Cause 2. I can't remember the last time I went online. I find the web browser too fiddly to use on a regular basis, so I only use it on occasion.
I mainly play games games on it (both on- and offline), watch Netflix and on rare occasions also dvd's/blu-rays.