i suspect that the electronic musicians/DJs i'd most like to borrow ipods from aren't well-known to most folks here (with the possible exception of azaghal). these guys produce more music than they officially release, so i'd hope that their ipods are full of unreleased goodies. they also tends to trade with each other, so their personal collection are the stuff of legend.
thom yorke probably has an interesting collection on his ipod. it's through him that i learned of burial, modeselektor, etc so i assume he'd have other glitchy goodness on there.