Hey Ceri! Tristan here.
I created a work for solo piano and live tape part generated by PD. It's called takeover and can be found on my site www.tjevs.com. It uses an interactive cue system, and it's kind of human against machine, and about working together. The full scores on my site too, as well as a live recording. I'll upload it into the PD community very soon, but currently I am exploring the use of midi and live audio alongside live instruments, as well as creating full works within PD.
I'd only been using PD for 2 months when I wrote my takeover patch, and now im getting into more and more intense patches, for example developing my own quad speaker setup for future live performances, which can be controlled by just hitting switches.
Keep PD'in you guys!