I used to love smoking while coding (at home, not in the office as that would piss people off), but have given it up; it's been replaced with a well made coffee. I keep a coffee plunger at the office (which is also above some awesome baristas) and have a cheap espresso machine and grinder at home.
Music is always good, I prefer something that I'm extremely familiar with (Tool and System are good ), or something "high-energy". I normally never listen to techno or dub-step, but actually like them when coding for a bit of mindless energy.
I used to hate any kind of distraction - like TV - but these days I like having something that I'm interested in, but don't have to pay attention to, playing on my 2nd monitor. Lately, I've been 'watching' a ton of GOMTV.net's Starcraft matches while working -- the ones I don't care if I miss, but would like to know the results of anyway, i.e. not the Code S Finals.

Music, and web surfing. Mostly on amazon, for some strange reason...

I go check the fridge in case some new delicious consumable has spawned there.


Then i go read forums and dont bother to program at all.

Listen to trance.

I do cocaine.

Suddenly LOC becomes a whole different project metric...

I put on some headphones and blast whatever on Pandora. I also open a few tabs on Firefox and incessantly check GameDev and a few other sites, though I'm more productive when I don't.

Type an opening brace, and spend the next 5 hours randomly surfing the net, then going to bed.

I go check the fridge in case some new delicious consumable has spawned there.

that pretty much sums up my daily programming time.

however i generally write a single line of code before web surfing, so eventually...i'll get their...

Adding something nobody cited (How can you guys live without it??)
I incessantly check my e-mail. I work with different people on different projects + am still in colege, so e-mail is not what I lack on this life.

I try to listen to music to drown out the sounds of my current surroundings, but instead of coding along with it, I generally just get absorbed in the music... next thing I know, 20 minutes have passed and I haven't written a single line of code.

I also try to do most of my coding in the morning before work, so I eat breakfast and drink coffee while programming. Interestingly, I can generally pop out more code after only having been awake for 10 minutes, rather than later in the day. It generally works the first time, too!

Adding something nobody cited (How can you guys live without it??)
I incessantly check my e-mail. I work with different people on different projects + am still in colege, so e-mail is not what I lack on this life.

Ah, yes. I do that too. Uber frequently. Mostly I'm checking the FFmpeg mailing lists, as no one else usually emails me...

Am I the only one who requires it to be - quiet - ?
No music, no TV, no distractions.