Here's mine, although my personal performance practice is more like "live tweaking" -- I don't lean into it, but it's nice to have as an option when improvising in case I want to "rebuild" my instrument in the middle of a set...
Haven't seen ChucK mentioned yet, which is one of the few live-coding systems I've spent any real time with. The way you reason about time in ChucK is really wonderful and as far as I know pretty unique. LC (which aims to be a kind of DSL for granular synthesis and time-domain microsound stuff) is the only other language I know of inspired by ChucK that is "strongly timed".
There is a recent issue of Computer Music Journal all about ChucK (and some interesting new computer music languages, not all for live coding though) and it's pretty great! http://www.mitpressjournals.org/toc/comj/39/4
Edit: also thanks for the heads-up @madeofoak <3