Comfortable, big monitor, and uninterrupted. Music or other white noise (like the mutter at the office) is good for when I'm just doing a bit, but when I really hit he zone I tune out everything but the code.

That's why comfortable - if I get a cramp or something, it'll force me out of the zone (stretch before coding? *grin*) Phones or people are just as bad. No interruptions!

I like a big monitor because I like working on things side by side, maybe modifying source and running it next to each other, or calling up other related modules. At the very least I need some elbow room for notes/reference materials.

Prefered is also a chunk of time where I don't have to watch the clock. Even if I don't code for long, if I don't have to have that little interrupt to wonder how much time I have left it's one less distraction.

Other then that, I could care less. I don't really notice.

=Blue
...you might be eaten by a grue...