It's a great headset. Comfortable and awesome sound listening and recording quality. The mic comes just to the edge of your lip (on the left side). It uses the standard stereo jack, so it should plug into any computer (or iPod). Though, I don't see anyone wearing these with an iPod cause you'd look like a dork. The only issue with using this headphone (and any other really) is that the iPod can't really drive high impedance gear (not sure how low it supports)...you need something with a very low impedance for this sort of use. The DT234Pro can be driven by a PC without amplification, but I don't know how it'll go with a iPod.
My microphone has fallen off, though, but to be honest it's a great record especially given the fact that it's nearly two years old (most other headsets I've tinkered - as in the <$100 ones - have lasted me only a few months before something died). Furthermore, I still have sound in both ears (another pet hate of mine re: headphones) - which is the more important part.
Just make sure you treat it with the respect that it deserves and it will last you long enough to make the purchase worth your while.