Yes. It's a reminder that there's a non-conceptual aspect to life—a way to be that doesn't involve categorizing or evaluating, just acting and experiencing. 'Body scan' meditation and breath watching are both great for this. It's like some deeper, unseen part of mind chooses at any given point whether to exist as that voice in your head, or your physical body. For me, exercising ambition and over-focusing on intellectual pursuits for too long made it so that I was pretty much exclusively identifying with the 'voice in my head.' It sounds like I'm describing some inexact fluffy sort of thing, but I have something very definite in mind with this description: my subjective experience is starkly different based on whether I'm in the physical or mental 'mode.' And this is not a special insight of my own; their are plenty of ancient and modern treatments of the problem of thinking you are your thoughts.
And, I'm pretty sure that understanding how to move between these modes is a key aspect to cultivating 'flow' in programming (or other activities).
I'm still relatively new to meditation (about 1.5 months regularly; over a year reading about it and doing it occasionally), but I've reaped definite benefits from the time I've put in. It feels like the descriptions in 'Flatland' of discovering there's a new dimension that you can move in: without meditating it was like I was constrained to endlessly following up whatever thoughts I started up, and now I'm getting better at simply stepping aside when I can see it's no longer productive.
This has been especially important for me since I'd had an injury related to using mouse/keyboard so that it became impossible to 'get out of my head' while using the computer—was in the polar opposite of 'flow' whenever on the computer. I spent a couple years like that, in one sense relieved since I understood rationally that I wasn't damaging myself at the computer anymore—but still having a terrible time at the computer because of past experiences with it. There were a number of things that went into improving this, but things didn't start reaallly getting good again until I started meditating. The feeling is like learning an instrument though: I can see myself slowly becoming capable of making music—but it takes time.
I don't think I'm really all that much of a special case though. People are in their heads in an unpleasant way while coding because any number of things causes them anxiety: anything from finding yet another bug in your code to general unease from a built up habit of assessing your supposedly innate capacity as a programmer. If you have no concerns, you just act: it's just the code and the problem you're working on, everything else disappears, time disappears. If you can do it with the breath, you can do it with code.
edit: for typos, expanded a couple parts.