On the on going tour of "geek festivals" I went to the Cambridge Raspberry Jam, lots of talks, Tutorials and even more Vendors with cool toys!
I particularly like the talk from Andy Baker with his home brew Quadcopter controlled with a Raspberry Pi:
Additionally they are trying something new next time by running a "piwars" type event with feats of strength and skill for PI based robots from 16 teams. There's now a waiting list to join the fun but still plenty of tickets if you only want to spectate
