Coming from a support programmer role, the "Zone" is something a bit different, I believe. Often there are multiple fires - to a developer working on a single project, these are the distractions. But to a support programmer, being in the zone requires managing multiple tasks at once, filtering out the unnecessary or less urgent, and concentrating on each according to its priority. I describe that as "In the Zone" as well - a series of bang-out, knock-down fixes that come one after the other...

That said, there are times where I have to quiet the distractions around me and concentrate on a single issue - and I also think of movies. "The Legend of Bagger Vance" comes to mind. It's a golf movie, but Will Smith narrates to Matt Damon, and while he's in "In the Field" (I think that's the term used), the specators disappear, and the green - a good 200 yards away - seemingly moves closer to Damon's character. It's the only thing in focus. In IT, I think that singlemindedness can be both an asset and a liability.