Yesterday I was in Birmingham at the UKUUG Spring Conference. This year the emphasis is on dynamic languages and they asked me to give a day-long Perl tutorial. I presented a (lightly) updated version of the Teach-In that I previously presented at the BBC last summer.
My plan is to (eventually) upload all of my talk slides to Slidehare. This is, however, being slightly hampered by the fact that many of my slides were created using various (generally home-grown) HTML generators. And Slideshare doesn't (yet) handle HTML presentations.