Back in January, I've given a talk about Maemo Development at the Metalab Vienna. It's been up for some weeks now (the talk is in German, but at least I was using the N900 during the whole presentation. BTW: Is it possible to disable auto-rotate in the image viewer?): (direct link)
Maemo 5 "Getting Started" from metalab on Vimeo.
This upcoming weekend, the Nokia Mobile Developers Conference is taking place in Hagenberg, Austria, and if you happen to have time on March 5th and 6th, register for free (free shuttle busses are available from Vienna to Hagenberg and back). I'll be giving a talk about Open Source Applications on Maemo 5. Say hi if you happen to be there! :)