heh, I don't do TV or facebook, and I have had my phone set to silent since April, 2009. I very rarely pick up, but will often return the call within a few minutes. A lot of my phone aversion isn't because it comes at inconvenient times, but just because I find it a very unhappy medium between non-real-time communication like email, and face-to-face meetings. For instance, a thoughtful silence is part of normal face-to-face conversation. On the phone, it's just awkward. I will only talk on the phone if it's about superficial subjects and I know I can yak it up to fill silence (and, hopefully, sell a sign or three!).
I tend to respond to simple requests (either coworker interruption, or email, or whatnot) immediately simply because it's one less thing I have to think about doing later. If I put something off, then I have a reminder to myself left somewhere - either an email in the inbox, or a note on a 'to do' list (I have about 6 to-do lists, with a total of maybe 100 items altogether), but if I can take care of it in 30 seconds, there's that added feeling of accomplishment.
and yes, clerical-level work is much easier to do when there are vuvuzelas and thrown folding chairs in the background... but for the most part, a difficult engineering problem for me consists of maybe 20 consecutive minutes of A-level abstract thinking (which yields about 6 pages of scribbled notes) and then 3 hours of organizing that, writing it down in a more elegant form, thinking through the corner cases, figuring out how to simulate it, etc etc - which is far more clerical.