As someone who grew up on Dick Smith's Fun Way Into Electronics kits [1], I love the Arduino. I can see three Arduinos on my desk as I type. I'm not so smart with electronics, but it is a lot of fun, and it's a golden age for this kind of thing.
[1] Dick Smith is a successful Aussie entrepreneur who created a chain of hobby electronics stores and sold the chain when it had (I think) 200 employees and he couldn't remember all their names, so it wasn't so much fun anymore.
When Redhead matches was bought by overseas interests, he created Dickhead matches in protest and sold them in Aussie supermarkets.
He jumped a double-decker bus over 15 motorbikes when I was a kid, parodying Evel Knievel. He was my hero.
http://en.wikipedia.org/wiki/Dick_Smith_(entrepreneur)
He recently created the Wilberforce award - "$1 million to go to a young person under 30 who can impress me by becoming famous through his or her ability to show leadership in communicating an alternative to our population and consumption growth-obsessed economy."
http://dicksmithpopulation.com/wilberforce-award/
"It has become obvious to me that my generation has over exploited our wonderful world – and it’s younger people who will pay the price."
Edit: He's also a founder and patron of the Australian Skeptics.
http://en.wikipedia.org/wiki/Australian_Skeptics
Edit 2: Picture of the bus jumping the motorcycles
http://www.dropbears.com/m/models/specials/busjump.htm