14-year old Zach Igielman has just started up a YouTube channel. His first video is a tutorial for using the MMA7455 accelerometer. He's got a great style of delivery and goes into what the sensor does and how to do it. Watch his video below.
Raspberry Pi Foundation founder Eben Upton went over to Dublin to talk at the University College. His speech, As Easy As (Raspberry) Pi: How New Technologies Are Changing Your World, can be seen below: