When I want to be really productive, I listen to my Deadmau5 channel (it's not my favoritist music in the world, but it does a great job at creating a droning ambience that stops my brain from thinking about tangential things).

Actually I was shocked to find this was true. I'm not a dubstep guy (not really much of a music guy in general), but anytime I listen to dubstep while programming, my productivity, focus, (hopefully) code quality, and enjoyment all take a significant jump. Half the time I just go to one of those channels with the 2 hour long compilations of random stuff and just let it play. I have no idea what I'm hearing, but it keeps me from saying "Hey, I wonder if Kevin got my e-mail yet. Might as well check real quick."

Going Quantum podcast tends to be my music of choice for coding. Also, if you like music do yourself a favour and get some decent over ear open backed headphones with a wide frequency response and low distortion. Closed back aren't bad either, but open do sound better. Start of the year I spent about £150 on some sennheiser headphones and it was the best investment I've made audio wise.

Depends on the project & time committed to solely programming. I'll play some YouTube chillstep mixes or my hans zimmer Pandora channel if I've got a lot of time. Otherwise, i keep it fairly quiet.

I find it extremely interesting that other people actually find dubstep/chillstep good for productivity. I honestly rarely listen to any music. But man, dubstep really works wonders. I even listen to it when I'm doing math homework or something.

Laugh if you will, but as a fan of pro-wrestling I've found that to be great background material--nobody's saying anything that you need to fully focus on, and if you look up every now and again you're bound to see somebody doing a cool backflip and then kicking someone else in the head.