This is a great topic for a thread!

1. I do wear headphones. I need a headset with a mic. My current set is a pair of Sennheiser PC310 but I long for the PC 363D.

2. Never with speakers

3. Everything, and I mean that. I generally go for something without any vocals when I'm trying to concentrate. When I'm really in to something I reach for something electronic. Trance or deep house or drum and bass. Quite often it's Hybrid actually.

5. No playlists -spotify is not available inmy location. I do sometimes reach for DJ Bolivia's "music to code by" series: http://djbolivia.blogspot.ca/2011/04/music-to-code-by-volume...