Does anybody actually use Big Picture?

No and i think it is not very good. I like to have the classic one with metro skin and all things are perfect. :)

Yes, only when using a controller and when I'm not sitting at my desk. Works great.

i only use steam small picture

No, for some reason makes my games lags (fps drop), also the crashing is so annoying.

I tried it, it seemed pointless, went back to the classic. Maybe I am just too set in my ways. Mind you, if I played on a larger screen, it might be more pointfull (I know that isn't a word).

I use it without controller the first time it was in the beta, but it was a little slow and pointless. Now I have a cotroller and I use sometimes.

Not with or without a controller - I just launch the games and either play them on my laptop screen or my widescreen 3D display...

Nope.

I use it with a controller, I have a 42" lcd at the living connected via hdmi, so I launch big picture and I go to play whatever I want

I use it only with Controller....without it's some kind of pointless mode

On PC, with a controller when hooked up to the TV. That's also usually when I have friends over. (I don't let them touch my kb/m.)

I find it still has some major bugs so I choose not to... I just change the main screen from my laptop to my TV and TADA!

Big Picture bugs out on me sometimes and messes up with chats and sometimes slows my games down...

Only with a controller. I've never had it crash.

I use Big Picture, but with a controller on my HTPC.

Tried it once, controller was unplugged and felt lazy so I just got out of there and reverted to the good old Steam. Maybe on an HTPC, in front of the TV I'd use it, but it's much simpler using keyboard and mouse while at my desk.

I use a HD cable to connect my laptop to the TV and then I use Big Picture with my controller, it's actually pretty nice.

My oldest brother likes to use it with my PS3 controller.