For me, the louder the music, the better I'll work. I really like to be amped whilst working, as I tend to be far more motivated and less inclined to "just have a look around the net for 17 hours".
Another thing I find to be a major factor in procrastinating is the amount of caffeine I drink - The more coffee / Redbull I have, the less focussed I am and the more likely my brain drifts on to other things, contrary to the all-nighter practice of drinking as much as you can whilst popping Pro Plus every half hour
It keeps you awake, sure, but it keeps your mind over-active and prone to distraction.
G