I'm currently in beautiful brutalist Birmingham at EuroPython. So far, I have seen a talk on RjDj, a platform for making generative/algorithmic music (which is based on Pure Data), which looked very interesting. And just now, I saw Cory Doctorow's keynote, where he gave a comprehensive overview of metaclass design patterns in Django. Actually, I lie; he talked about how bad copyright laws threaten free software and the right to innovate, with Python being essentially a McGuffin. Nonetheless, it was a good talk (though I've heard most of it before at Copyfighters' Hyde Park meetups and on Boing Boing).